[Yt-svn] yt-commit r1166 - trunk/yt/lagos

mturk at wrangler.dreamhost.com mturk at wrangler.dreamhost.com
Tue Feb 10 14:12:35 PST 2009


Author: mturk
Date: Tue Feb 10 14:12:34 2009
New Revision: 1166
URL: http://yt.spacepope.org/changeset/1166

Log:
Fixes for the by-levels octree generation.  Fixes for generating child_indices.



Modified:
   trunk/yt/lagos/BaseGridType.py
   trunk/yt/lagos/DepthFirstOctree.c
   trunk/yt/lagos/DepthFirstOctree.pyx
   trunk/yt/lagos/HierarchyType.py

Modified: trunk/yt/lagos/BaseGridType.py
==============================================================================
--- trunk/yt/lagos/BaseGridType.py	(original)
+++ trunk/yt/lagos/BaseGridType.py	Tue Feb 10 14:12:34 2009
@@ -306,7 +306,8 @@
         """
         self.__child_index_mask = na.zeros(self.ActiveDimensions, 'int32') - 1
         for child in self.Children:
-            self.__fill_child_mask(child, self.__child_mask, child.id)
+            self.__fill_child_mask(child, self.__child_index_mask,
+                                   child.id)
 
     def _get_coords(self):
         if self.__coords == None: self._generate_coords()

Modified: trunk/yt/lagos/DepthFirstOctree.c
==============================================================================
--- trunk/yt/lagos/DepthFirstOctree.c	(original)
+++ trunk/yt/lagos/DepthFirstOctree.c	Tue Feb 10 14:12:34 2009
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.9.8.1.1 on Wed Nov  5 09:40:16 2008 */
+/* Generated by Cython 0.10.3 on Fri Feb  6 13:47:10 2009 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -31,14 +31,15 @@
 
   typedef struct {
        void *buf;
+       PyObject *obj;
        Py_ssize_t len;
+       Py_ssize_t itemsize;
        int readonly;
-       const char *format;
        int ndim;
+       char *format;
        Py_ssize_t *shape;
        Py_ssize_t *strides;
        Py_ssize_t *suboffsets;
-       Py_ssize_t itemsize;
        void *internal;
   } Py_buffer;
 
@@ -63,6 +64,9 @@
   #define Py_TPFLAGS_CHECKTYPES 0
   #define Py_TPFLAGS_HAVE_INDEX 0
 #endif
+#if (PY_VERSION_HEX < 0x02060000) || (PY_MAJOR_VERSION >= 3)
+  #define Py_TPFLAGS_HAVE_NEWBUFFER 0
+#endif
 #if PY_MAJOR_VERSION >= 3
   #define PyBaseString_Type            PyUnicode_Type
   #define PyString_Type                PyBytes_Type
@@ -104,6 +108,7 @@
 #endif
 #include <math.h>
 #define __PYX_HAVE_API__yt__lagos__DepthFirstOctree
+#include "stdlib.h"
 #include "numpy/arrayobject.h"
 
 
@@ -176,41 +181,31 @@
 static const char **__pyx_f;
 
 static char __pyx_mdoc[] = "\nThis is a recursive function to return a depth-first octree\n\nAuthor: Matthew Turk <matthewturk at gmail.com>\nAffiliation: KIPAC/SLAC/Stanford\nHomepage: http://yt.enzotools.org/\nLicense:\n  Copyright (C) 2008 Matthew Turk.  All Rights Reserved.\n\n  This file is part of yt.\n\n  yt is free software; you can redistribute it and/or modify\n  it under the terms of the GNU General Public License as published by\n  the Free Software Foundation; either version 3 of the License, or\n  (at your option) any later version.\n\n  This program is distributed in the hope that it will be useful,\n  but WITHOUT ANY WARRANTY; without even the implied warranty of\n  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n  GNU General Public License for more details.\n\n  You should have received a copy of the GNU General Public License\n  along with this program.  If not, see <http://www.gnu.org/licenses/>.\n";
-static INLINE void __Pyx_SafeReleaseBuffer(PyObject* obj, Py_buffer* info);
-static INLINE void __Pyx_ZeroBuffer(Py_buffer* buf); /*proto*/
-static INLINE const char* __Pyx_ConsumeWhitespace(const char* ts); /*proto*/
-static INLINE const char* __Pyx_BufferTypestringCheckEndian(const char* ts); /*proto*/
-static void __Pyx_BufferNdimError(Py_buffer* buffer, int expected_ndim); /*proto*/
-static const char* __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_int32_t(const char* ts); /*proto*/
 
-static int __Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t(PyObject* obj, Py_buffer* buf, int flags, int nd); /*proto*/
-static const char* __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_float64_t(const char* ts); /*proto*/
+static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
+    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found); /*proto*/
 
-static int __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t(PyObject* obj, Py_buffer* buf, int flags, int nd); /*proto*/
-#define __Pyx_BufPtrStrided1d(buf, i0, s0) ((char*)buf + i0 * s0)
-#define __Pyx_BufPtrStrided4d(buf, i0, s0, i1, s1, i2, s2, i3, s3) ((char*)buf + i0 * s0 + i1 * s1 + i2 * s2 + i3 * s3)
-#define __Pyx_BufPtrStrided2d(buf, i0, s0, i1, s1) ((char*)buf + i0 * s0 + i1 * s1)
-
-static void __Pyx_RaiseBufferFallbackError(void); /*proto*/
-#define __Pyx_BufPtrStrided3d(buf, i0, s0, i1, s1, i2, s2) ((char*)buf + i0 * s0 + i1 * s1 + i2 * s2)
+static INLINE int __Pyx_CheckKeywordStrings(PyObject *kwdict,
+    const char* function_name, int kw_allowed); /*proto*/
 
-static INLINE void __Pyx_RaiseArgtupleTooLong(Py_ssize_t num_expected, Py_ssize_t num_found); /*proto*/
+static void __Pyx_RaiseDoubleKeywordsError(
+    const char* func_name, PyObject* kw_name); /*proto*/
 
-static int __Pyx_CheckKeywordStrings(PyObject *kwdict, const char* function_name, int kw_allowed); /*proto*/
+static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],     PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args,     const char* function_name); /*proto*/
+static INLINE void __Pyx_SafeReleaseBuffer(Py_buffer* info);
+static INLINE void __Pyx_ZeroBuffer(Py_buffer* buf); /*proto*/
+static INLINE const char* __Pyx_ConsumeWhitespace(const char* ts); /*proto*/
+static void __Pyx_BufferNdimError(Py_buffer* buffer, int expected_ndim); /*proto*/
+static const char* __Pyx_DescribeTokenInFormatString(const char* ts); /*proto*/
+static const char* __Pyx_CheckTypestring_nn___pyx_t_5numpy_int32_t(const char* ts); /*proto*/
 
-static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed, char *name, int exact); /*proto*/
-#if (PY_MAJOR_VERSION < 3) && !(Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
-static int __Pyx_GetBuffer(PyObject *obj, Py_buffer *view, int flags);
-static void __Pyx_ReleaseBuffer(PyObject *obj, Py_buffer *view);
-#else
-#define __Pyx_GetBuffer PyObject_GetBuffer
-#define __Pyx_ReleaseBuffer PyObject_ReleaseBuffer
-#endif
+static int __Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t(PyObject* obj, Py_buffer* buf, int flags, int nd, int cast); /*proto*/
+static const char* __Pyx_CheckTypestring_nn___pyx_t_5numpy_float64_t(const char* ts); /*proto*/
 
-Py_ssize_t __Pyx_zeros[] = {0, 0, 0, 0};
-Py_ssize_t __Pyx_minusones[] = {-1, -1, -1, -1};
+static int __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t(PyObject* obj, Py_buffer* buf, int flags, int nd, int cast); /*proto*/
 
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list); /*proto*/
+static INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
+static INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
 static INLINE PyObject *__Pyx_GetItemInt(PyObject *o, Py_ssize_t i, int is_unsigned) {
     PyObject *r;
@@ -233,6 +228,27 @@
     }
     return r;
 }
+#define __Pyx_BufPtrStrided1d(type, buf, i0, s0) (type)((char*)buf + i0 * s0)
+#define __Pyx_BufPtrStrided4d(type, buf, i0, s0, i1, s1, i2, s2, i3, s3) (type)((char*)buf + i0 * s0 + i1 * s1 + i2 * s2 + i3 * s3)
+#define __Pyx_BufPtrStrided2d(type, buf, i0, s0, i1, s1) (type)((char*)buf + i0 * s0 + i1 * s1)
+
+static void __Pyx_RaiseBufferFallbackError(void); /*proto*/
+#define __Pyx_BufPtrStrided3d(type, buf, i0, s0, i1, s1, i2, s2) (type)((char*)buf + i0 * s0 + i1 * s1 + i2 * s2)
+
+static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
+    const char *name, int exact); /*proto*/
+#if PY_MAJOR_VERSION < 3
+static int __Pyx_GetBuffer(PyObject *obj, Py_buffer *view, int flags);
+static void __Pyx_ReleaseBuffer(Py_buffer *view);
+#else
+#define __Pyx_GetBuffer PyObject_GetBuffer
+#define __Pyx_ReleaseBuffer PyBuffer_Release
+#endif
+
+Py_ssize_t __Pyx_zeros[] = {0, 0, 0, 0};
+Py_ssize_t __Pyx_minusones[] = {-1, -1, -1, -1};
+
+static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list); /*proto*/
 
 static int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
 
@@ -244,11 +260,16 @@
 static PyObject* __pyx_print_kwargs = 0;
 #endif
 
+static INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
+static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
+
 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
 
-static PyTypeObject *__Pyx_ImportType(char *module_name, char *class_name, long size);  /*proto*/
+static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
-static PyObject *__Pyx_ImportModule(char *name); /*proto*/
+static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name, long size);  /*proto*/
+
+static PyObject *__Pyx_ImportModule(const char *name); /*proto*/
 
 static void __Pyx_AddTraceback(const char *funcname); /*proto*/
 
@@ -290,6 +311,12 @@
 
 typedef npy_longdouble __pyx_t_5numpy_longdouble_t;
 
+typedef npy_cfloat __pyx_t_5numpy_cfloat_t;
+
+typedef npy_cdouble __pyx_t_5numpy_cdouble_t;
+
+typedef npy_clongdouble __pyx_t_5numpy_clongdouble_t;
+
 /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":30
  * cimport cython
  * 
@@ -334,10 +361,15 @@
   PyObject_HEAD
   PyObject *grids;
 };
+/* Module declarations from python_buffer */
+
+/* Module declarations from stdlib */
+
 /* Module declarations from numpy */
 
 /* Module declarations from numpy */
 
+static PyTypeObject *__pyx_ptype_5numpy_dtype = 0;
 static PyTypeObject *__pyx_ptype_5numpy_ndarray = 0;
 /* Module declarations from cython */
 
@@ -355,40 +387,104 @@
 static PyObject *__pyx_kp___cinit__;
 static char __pyx_k___getitem__[] = "__getitem__";
 static PyObject *__pyx_kp___getitem__;
+static char __pyx_k_child_indices[] = "child_indices";
+static PyObject *__pyx_kp_child_indices;
+static char __pyx_k_fields[] = "fields";
+static PyObject *__pyx_kp_fields;
+static char __pyx_k_left_edges[] = "left_edges";
+static PyObject *__pyx_kp_left_edges;
+static char __pyx_k_dimensions[] = "dimensions";
+static PyObject *__pyx_kp_dimensions;
+static char __pyx_k_dx[] = "dx";
+static PyObject *__pyx_kp_dx;
+static char __pyx_k_level[] = "level";
+static PyObject *__pyx_kp_level;
+static char __pyx_k_grids[] = "grids";
+static PyObject *__pyx_kp_grids;
+static char __pyx_k_item[] = "item";
+static PyObject *__pyx_kp_item;
+static char __pyx_k_i_i[] = "i_i";
+static PyObject *__pyx_kp_i_i;
+static char __pyx_k_j_i[] = "j_i";
+static PyObject *__pyx_kp_j_i;
+static char __pyx_k_k_i[] = "k_i";
+static PyObject *__pyx_kp_k_i;
+static char __pyx_k_i_f[] = "i_f";
+static PyObject *__pyx_kp_i_f;
+static char __pyx_k_j_f[] = "j_f";
+static PyObject *__pyx_kp_j_f;
+static char __pyx_k_k_f[] = "k_f";
+static PyObject *__pyx_kp_k_f;
+static char __pyx_k_curpos[] = "curpos";
+static PyObject *__pyx_kp_curpos;
+static char __pyx_k_gi[] = "gi";
+static PyObject *__pyx_kp_gi;
+static char __pyx_k_output[] = "output";
+static PyObject *__pyx_kp_output;
+static char __pyx_k_refined[] = "refined";
+static PyObject *__pyx_kp_refined;
+static char __pyx_k_genealogy[] = "genealogy";
+static PyObject *__pyx_kp_genealogy;
+static char __pyx_k_corners[] = "corners";
+static PyObject *__pyx_kp_corners;
 static char __pyx_k_numpy[] = "numpy";
 static PyObject *__pyx_kp_numpy;
 static char __pyx_k_np[] = "np";
 static PyObject *__pyx_kp_np;
-static char __pyx_k_17[] = "RecurseOctreeDepthFirst";
-static PyObject *__pyx_kp_17;
-static char __pyx_k_18[] = "RecurseOctreeByLevels";
-static PyObject *__pyx_kp_18;
+static char __pyx_k_23[] = "RecurseOctreeDepthFirst";
+static PyObject *__pyx_kp_23;
+static char __pyx_k_24[] = "RecurseOctreeByLevels";
+static PyObject *__pyx_kp_24;
 static char __pyx_k___getbuffer__[] = "__getbuffer__";
 static PyObject *__pyx_kp___getbuffer__;
-static char __pyx_k_RuntimeError[] = "RuntimeError";
-static PyObject *__pyx_kp_RuntimeError;
+static char __pyx_k___releasebuffer__[] = "__releasebuffer__";
+static PyObject *__pyx_kp___releasebuffer__;
+static char __pyx_k_info[] = "info";
+static PyObject *__pyx_kp_info;
+static char __pyx_k_flags[] = "flags";
+static PyObject *__pyx_kp_flags;
 static char __pyx_k_ValueError[] = "ValueError";
 static PyObject *__pyx_kp_ValueError;
+static char __pyx_k_iteritems[] = "iteritems";
+static PyObject *__pyx_kp_iteritems;
+static char __pyx_k_next[] = "next";
+static PyObject *__pyx_kp_next;
+static char __pyx_k_StopIteration[] = "StopIteration";
+static PyObject *__pyx_kp_StopIteration;
+static char __pyx_k_pop[] = "pop";
+static PyObject *__pyx_kp_pop;
+static char __pyx_k_RuntimeError[] = "RuntimeError";
+static PyObject *__pyx_kp_RuntimeError;
 static PyObject *__pyx_kp_1;
-static PyObject *__pyx_kp_16;
-static PyObject *__pyx_builtin_RuntimeError;
+static PyObject *__pyx_kp_2;
+static PyObject *__pyx_kp_20;
+static PyObject *__pyx_kp_21;
+static PyObject *__pyx_kp_22;
 static PyObject *__pyx_builtin_ValueError;
-static char __pyx_k_1[] = "Py_intptr_t and Py_ssize_t differs in size, numpy.pxd does not support this";
-static char __pyx_k_2[] = "b";
-static char __pyx_k_3[] = "B";
-static char __pyx_k_4[] = "h";
-static char __pyx_k_5[] = "H";
-static char __pyx_k_6[] = "i";
-static char __pyx_k_7[] = "I";
-static char __pyx_k_8[] = "l";
-static char __pyx_k_9[] = "L";
-static char __pyx_k_10[] = "q";
-static char __pyx_k_11[] = "Q";
-static char __pyx_k_12[] = "f";
-static char __pyx_k_13[] = "d";
-static char __pyx_k_14[] = "g";
-static char __pyx_k_15[] = "O";
-static char __pyx_k_16[] = "only objects, int and float dtypes supported for ndarray buffer access so far (dtype is %d)";
+static PyObject *__pyx_builtin_StopIteration;
+static PyObject *__pyx_builtin_RuntimeError;
+static char __pyx_k_1[] = "ndarray is not C contiguous";
+static char __pyx_k_2[] = "ndarray is not Fortran contiguous";
+static char __pyx_k_3[] = "b";
+static char __pyx_k_4[] = "B";
+static char __pyx_k_5[] = "h";
+static char __pyx_k_6[] = "H";
+static char __pyx_k_7[] = "i";
+static char __pyx_k_8[] = "I";
+static char __pyx_k_9[] = "l";
+static char __pyx_k_10[] = "L";
+static char __pyx_k_11[] = "q";
+static char __pyx_k_12[] = "Q";
+static char __pyx_k_13[] = "f";
+static char __pyx_k_14[] = "d";
+static char __pyx_k_15[] = "g";
+static char __pyx_k_16[] = "Zf";
+static char __pyx_k_17[] = "Zd";
+static char __pyx_k_18[] = "Zg";
+static char __pyx_k_19[] = "O";
+static char __pyx_k_20[] = "unknown dtype code in numpy.pxd (%d)";
+static char __pyx_k_21[] = "Format string allocated too short.";
+static char __pyx_k_22[] = "unknown dtype code in numpy.pxd (%d)";
 
 /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":32
  * cdef class position:
@@ -402,12 +498,8 @@
 static int __pyx_pf_2yt_5lagos_16DepthFirstOctree_8position___cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   int __pyx_r;
   if (unlikely(PyTuple_GET_SIZE(__pyx_args) > 0)) {
-    __Pyx_RaiseArgtupleTooLong(0, PyTuple_GET_SIZE(__pyx_args));
-    return -1;
-  }
-  if (unlikely(__pyx_kwds)) {
-    if (unlikely(!__Pyx_CheckKeywordStrings(__pyx_kwds, "__cinit__", 0))) return -1;
-  }
+    __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 0, 0, PyTuple_GET_SIZE(__pyx_args)); return -1;}
+  if (unlikely(__pyx_kwds) && unlikely(PyDict_Size(__pyx_kwds) > 0) && unlikely(!__Pyx_CheckKeywordStrings(__pyx_kwds, "__cinit__", 0))) return -1;
 
   /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":33
  *     cdef public int output_pos, refined_pos
@@ -473,8 +565,68 @@
   Py_ssize_t __pyx_bstride_0_dimensions = 0;
   Py_ssize_t __pyx_bshape_0_dimensions = 0;
   int __pyx_r;
-  static char *__pyx_argnames[] = {"child_indices","fields","left_edges","dimensions","dx","level",0};
-  if (likely(!__pyx_kwds) && likely(PyTuple_GET_SIZE(__pyx_args) == 6)) {
+  static PyObject **__pyx_pyargnames[] = {&__pyx_kp_child_indices,&__pyx_kp_fields,&__pyx_kp_left_edges,&__pyx_kp_dimensions,&__pyx_kp_dx,&__pyx_kp_level,0};
+  if (unlikely(__pyx_kwds)) {
+    PyObject* values[6] = {0,0,0,0,0,0};
+    Py_ssize_t kw_args = PyDict_Size(__pyx_kwds);
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case  6: values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+      case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+      case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+      case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+      case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      case  0: break;
+      default: goto __pyx_L5_argtuple_error;
+    }
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case  0:
+      values[0] = PyDict_GetItem(__pyx_kwds, __pyx_kp_child_indices);
+      if (likely(values[0])) kw_args--;
+      else goto __pyx_L5_argtuple_error;
+      case  1:
+      values[1] = PyDict_GetItem(__pyx_kwds, __pyx_kp_fields);
+      if (likely(values[1])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, 1); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  2:
+      values[2] = PyDict_GetItem(__pyx_kwds, __pyx_kp_left_edges);
+      if (likely(values[2])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, 2); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  3:
+      values[3] = PyDict_GetItem(__pyx_kwds, __pyx_kp_dimensions);
+      if (likely(values[3])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, 3); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  4:
+      values[4] = PyDict_GetItem(__pyx_kwds, __pyx_kp_dx);
+      if (likely(values[4])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, 4); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  5:
+      values[5] = PyDict_GetItem(__pyx_kwds, __pyx_kp_level);
+      if (likely(values[5])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, 5); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    }
+    if (unlikely(kw_args > 0)) {
+      if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, PyTuple_GET_SIZE(__pyx_args), "__cinit__") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    }
+    __pyx_v_child_indices = ((PyArrayObject *)values[0]);
+    __pyx_v_fields = ((PyArrayObject *)values[1]);
+    __pyx_v_left_edges = ((PyArrayObject *)values[2]);
+    __pyx_v_dimensions = ((PyArrayObject *)values[3]);
+    __pyx_v_dx = ((PyArrayObject *)values[4]);
+    __pyx_v_level = __pyx_PyInt_int(values[5]); if (unlikely((__pyx_v_level == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  } else if (PyTuple_GET_SIZE(__pyx_args) != 6) {
+    goto __pyx_L5_argtuple_error;
+  } else {
     __pyx_v_child_indices = ((PyArrayObject *)PyTuple_GET_ITEM(__pyx_args, 0));
     __pyx_v_fields = ((PyArrayObject *)PyTuple_GET_ITEM(__pyx_args, 1));
     __pyx_v_left_edges = ((PyArrayObject *)PyTuple_GET_ITEM(__pyx_args, 2));
@@ -482,32 +634,36 @@
     __pyx_v_dx = ((PyArrayObject *)PyTuple_GET_ITEM(__pyx_args, 4));
     __pyx_v_level = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 5)); if (unlikely((__pyx_v_level == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 45; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   }
-  else {
-    if (unlikely(!PyArg_ParseTupleAndKeywords(__pyx_args, __pyx_kwds, "OOOOOi", __pyx_argnames, &__pyx_v_child_indices, &__pyx_v_fields, &__pyx_v_left_edges, &__pyx_v_dimensions, &__pyx_v_dx, &__pyx_v_level))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
-  }
-  goto __pyx_L4;
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 6, 6, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.OctreeGrid.__cinit__");
   return -1;
-  __pyx_L4:;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_bstruct_child_indices.buf = NULL;
+  __pyx_bstruct_fields.buf = NULL;
+  __pyx_bstruct_left_edges.buf = NULL;
+  __pyx_bstruct_dimensions.buf = NULL;
+  __pyx_bstruct_dx.buf = NULL;
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_child_indices), __pyx_ptype_5numpy_ndarray, 1, "child_indices", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 40; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fields), __pyx_ptype_5numpy_ndarray, 1, "fields", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 41; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_left_edges), __pyx_ptype_5numpy_ndarray, 1, "left_edges", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_dimensions), __pyx_ptype_5numpy_ndarray, 1, "dimensions", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_dx), __pyx_ptype_5numpy_ndarray, 1, "dx", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_child_indices, &__pyx_bstruct_child_indices, PyBUF_FORMAT| PyBUF_STRIDES, 3) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_child_indices, &__pyx_bstruct_child_indices, PyBUF_FORMAT| PyBUF_STRIDES, 3, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_child_indices = __pyx_bstruct_child_indices.strides[0]; __pyx_bstride_1_child_indices = __pyx_bstruct_child_indices.strides[1]; __pyx_bstride_2_child_indices = __pyx_bstruct_child_indices.strides[2];
   __pyx_bshape_0_child_indices = __pyx_bstruct_child_indices.shape[0]; __pyx_bshape_1_child_indices = __pyx_bstruct_child_indices.shape[1]; __pyx_bshape_2_child_indices = __pyx_bstruct_child_indices.shape[2];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_fields, &__pyx_bstruct_fields, PyBUF_FORMAT| PyBUF_STRIDES, 4) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_fields, &__pyx_bstruct_fields, PyBUF_FORMAT| PyBUF_STRIDES, 4, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_fields = __pyx_bstruct_fields.strides[0]; __pyx_bstride_1_fields = __pyx_bstruct_fields.strides[1]; __pyx_bstride_2_fields = __pyx_bstruct_fields.strides[2]; __pyx_bstride_3_fields = __pyx_bstruct_fields.strides[3];
   __pyx_bshape_0_fields = __pyx_bstruct_fields.shape[0]; __pyx_bshape_1_fields = __pyx_bstruct_fields.shape[1]; __pyx_bshape_2_fields = __pyx_bstruct_fields.shape[2]; __pyx_bshape_3_fields = __pyx_bstruct_fields.shape[3];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_left_edges, &__pyx_bstruct_left_edges, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_left_edges, &__pyx_bstruct_left_edges, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_left_edges = __pyx_bstruct_left_edges.strides[0];
   __pyx_bshape_0_left_edges = __pyx_bstruct_left_edges.shape[0];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_dimensions, &__pyx_bstruct_dimensions, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_dimensions, &__pyx_bstruct_dimensions, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_dimensions = __pyx_bstruct_dimensions.strides[0];
   __pyx_bshape_0_dimensions = __pyx_bstruct_dimensions.shape[0];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_dx, &__pyx_bstruct_dx, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_dx, &__pyx_bstruct_dx, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_dx = __pyx_bstruct_dx.strides[0];
   __pyx_bshape_0_dx = __pyx_bstruct_dx.shape[0];
 
@@ -579,22 +735,22 @@
   goto __pyx_L0;
   __pyx_L1_error:;
   { PyObject *__pyx_type, *__pyx_value, *__pyx_tb;
-    PyErr_Fetch(&__pyx_type, &__pyx_value, &__pyx_tb);
-    __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_child_indices, &__pyx_bstruct_child_indices);
-    __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_fields, &__pyx_bstruct_fields);
-    __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_dx, &__pyx_bstruct_dx);
-    __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_left_edges, &__pyx_bstruct_left_edges);
-    __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_dimensions, &__pyx_bstruct_dimensions);
-  PyErr_Restore(__pyx_type, __pyx_value, __pyx_tb);}
+    __Pyx_ErrFetch(&__pyx_type, &__pyx_value, &__pyx_tb);
+    __Pyx_SafeReleaseBuffer(&__pyx_bstruct_child_indices);
+    __Pyx_SafeReleaseBuffer(&__pyx_bstruct_fields);
+    __Pyx_SafeReleaseBuffer(&__pyx_bstruct_dx);
+    __Pyx_SafeReleaseBuffer(&__pyx_bstruct_left_edges);
+    __Pyx_SafeReleaseBuffer(&__pyx_bstruct_dimensions);
+  __Pyx_ErrRestore(__pyx_type, __pyx_value, __pyx_tb);}
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.OctreeGrid.__cinit__");
   __pyx_r = -1;
   goto __pyx_L2;
   __pyx_L0:;
-  __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_child_indices, &__pyx_bstruct_child_indices);
-  __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_fields, &__pyx_bstruct_fields);
-  __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_dx, &__pyx_bstruct_dx);
-  __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_left_edges, &__pyx_bstruct_left_edges);
-  __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_dimensions, &__pyx_bstruct_dimensions);
+  __Pyx_SafeReleaseBuffer(&__pyx_bstruct_child_indices);
+  __Pyx_SafeReleaseBuffer(&__pyx_bstruct_fields);
+  __Pyx_SafeReleaseBuffer(&__pyx_bstruct_dx);
+  __Pyx_SafeReleaseBuffer(&__pyx_bstruct_left_edges);
+  __Pyx_SafeReleaseBuffer(&__pyx_bstruct_dimensions);
   __pyx_L2:;
   return __pyx_r;
 }
@@ -611,18 +767,37 @@
 static int __pyx_pf_2yt_5lagos_16DepthFirstOctree_14OctreeGridList___cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   PyObject *__pyx_v_grids = 0;
   int __pyx_r;
-  static char *__pyx_argnames[] = {"grids",0};
-  if (likely(!__pyx_kwds) && likely(PyTuple_GET_SIZE(__pyx_args) == 1)) {
+  static PyObject **__pyx_pyargnames[] = {&__pyx_kp_grids,0};
+  if (unlikely(__pyx_kwds)) {
+    PyObject* values[1] = {0};
+    Py_ssize_t kw_args = PyDict_Size(__pyx_kwds);
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      case  0: break;
+      default: goto __pyx_L5_argtuple_error;
+    }
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case  0:
+      values[0] = PyDict_GetItem(__pyx_kwds, __pyx_kp_grids);
+      if (likely(values[0])) kw_args--;
+      else goto __pyx_L5_argtuple_error;
+    }
+    if (unlikely(kw_args > 0)) {
+      if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, PyTuple_GET_SIZE(__pyx_args), "__cinit__") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    }
+    __pyx_v_grids = values[0];
+  } else if (PyTuple_GET_SIZE(__pyx_args) != 1) {
+    goto __pyx_L5_argtuple_error;
+  } else {
     __pyx_v_grids = PyTuple_GET_ITEM(__pyx_args, 0);
   }
-  else {
-    if (unlikely(!PyArg_ParseTupleAndKeywords(__pyx_args, __pyx_kwds, "O", __pyx_argnames, &__pyx_v_grids))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
-  }
-  goto __pyx_L4;
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 1, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 55; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.OctreeGridList.__cinit__");
   return -1;
-  __pyx_L4:;
+  __pyx_L4_argument_unpacking_done:;
 
   /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":56
  *     cdef public object grids
@@ -655,11 +830,11 @@
   assert(__pyx_arg_item); {
     __pyx_v_item = __pyx_PyInt_int(__pyx_arg_item); if (unlikely((__pyx_v_item == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 58; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   }
-  goto __pyx_L4;
+  goto __pyx_L4_argument_unpacking_done;
   __pyx_L3_error:;
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.OctreeGridList.__getitem__");
   return NULL;
-  __pyx_L4:;
+  __pyx_L4_argument_unpacking_done:;
 
   /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":59
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@@ -796,9 +971,109 @@
   long __pyx_t_21;
   long __pyx_t_22;
   long __pyx_t_23;
-  static char *__pyx_argnames[] = {"i_i","j_i","k_i","i_f","j_f","k_f","curpos","gi","output","refined","grids",0};
+  static PyObject **__pyx_pyargnames[] = {&__pyx_kp_i_i,&__pyx_kp_j_i,&__pyx_kp_k_i,&__pyx_kp_i_f,&__pyx_kp_j_f,&__pyx_kp_k_f,&__pyx_kp_curpos,&__pyx_kp_gi,&__pyx_kp_output,&__pyx_kp_refined,&__pyx_kp_grids,0};
   __pyx_self = __pyx_self;
-  if (likely(!__pyx_kwds) && likely(PyTuple_GET_SIZE(__pyx_args) == 11)) {
+  if (unlikely(__pyx_kwds)) {
+    PyObject* values[11] = {0,0,0,0,0,0,0,0,0,0,0};
+    Py_ssize_t kw_args = PyDict_Size(__pyx_kwds);
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case 11: values[10] = PyTuple_GET_ITEM(__pyx_args, 10);
+      case 10: values[9] = PyTuple_GET_ITEM(__pyx_args, 9);
+      case  9: values[8] = PyTuple_GET_ITEM(__pyx_args, 8);
+      case  8: values[7] = PyTuple_GET_ITEM(__pyx_args, 7);
+      case  7: values[6] = PyTuple_GET_ITEM(__pyx_args, 6);
+      case  6: values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+      case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+      case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+      case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+      case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      case  0: break;
+      default: goto __pyx_L5_argtuple_error;
+    }
+    switch (PyTuple_GET_SIZE(__pyx_args)) {
+      case  0:
+      values[0] = PyDict_GetItem(__pyx_kwds, __pyx_kp_i_i);
+      if (likely(values[0])) kw_args--;
+      else goto __pyx_L5_argtuple_error;
+      case  1:
+      values[1] = PyDict_GetItem(__pyx_kwds, __pyx_kp_j_i);
+      if (likely(values[1])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 1); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  2:
+      values[2] = PyDict_GetItem(__pyx_kwds, __pyx_kp_k_i);
+      if (likely(values[2])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 2); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  3:
+      values[3] = PyDict_GetItem(__pyx_kwds, __pyx_kp_i_f);
+      if (likely(values[3])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 3); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  4:
+      values[4] = PyDict_GetItem(__pyx_kwds, __pyx_kp_j_f);
+      if (likely(values[4])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 4); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  5:
+      values[5] = PyDict_GetItem(__pyx_kwds, __pyx_kp_k_f);
+      if (likely(values[5])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 5); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  6:
+      values[6] = PyDict_GetItem(__pyx_kwds, __pyx_kp_curpos);
+      if (likely(values[6])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 6); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  7:
+      values[7] = PyDict_GetItem(__pyx_kwds, __pyx_kp_gi);
+      if (likely(values[7])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 7); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  8:
+      values[8] = PyDict_GetItem(__pyx_kwds, __pyx_kp_output);
+      if (likely(values[8])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 8); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  9:
+      values[9] = PyDict_GetItem(__pyx_kwds, __pyx_kp_refined);
+      if (likely(values[9])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 9); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case 10:
+      values[10] = PyDict_GetItem(__pyx_kwds, __pyx_kp_grids);
+      if (likely(values[10])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, 10); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    }
+    if (unlikely(kw_args > 0)) {
+      if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, PyTuple_GET_SIZE(__pyx_args), "RecurseOctreeDepthFirst") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    }
+    __pyx_v_i_i = __pyx_PyInt_int(values[0]); if (unlikely((__pyx_v_i_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_j_i = __pyx_PyInt_int(values[1]); if (unlikely((__pyx_v_j_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_k_i = __pyx_PyInt_int(values[2]); if (unlikely((__pyx_v_k_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_i_f = __pyx_PyInt_int(values[3]); if (unlikely((__pyx_v_i_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_j_f = __pyx_PyInt_int(values[4]); if (unlikely((__pyx_v_j_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_k_f = __pyx_PyInt_int(values[5]); if (unlikely((__pyx_v_k_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_curpos = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_position *)values[6]);
+    __pyx_v_gi = __pyx_PyInt_int(values[7]); if (unlikely((__pyx_v_gi == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 64; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_output = ((PyArrayObject *)values[8]);
+    __pyx_v_refined = ((PyArrayObject *)values[9]);
+    __pyx_v_grids = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_OctreeGridList *)values[10]);
+  } else if (PyTuple_GET_SIZE(__pyx_args) != 11) {
+    goto __pyx_L5_argtuple_error;
+  } else {
     __pyx_v_i_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 0)); if (unlikely((__pyx_v_i_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     __pyx_v_j_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 1)); if (unlikely((__pyx_v_j_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     __pyx_v_k_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 2)); if (unlikely((__pyx_v_k_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
@@ -811,30 +1086,31 @@
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-  else {
-    if (unlikely(!PyArg_ParseTupleAndKeywords(__pyx_args, __pyx_kwds, "iiiiiiOiOOO", __pyx_argnames, &__pyx_v_i_i, &__pyx_v_j_i, &__pyx_v_k_i, &__pyx_v_i_f, &__pyx_v_j_f, &__pyx_v_k_f, &__pyx_v_curpos, &__pyx_v_gi, &__pyx_v_output, &__pyx_v_refined, &__pyx_v_grids))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
-  }
-  goto __pyx_L4;
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("RecurseOctreeDepthFirst", 1, 11, 11, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.RecurseOctreeDepthFirst");
   return NULL;
-  __pyx_L4:;
+  __pyx_L4_argument_unpacking_done:;
   __pyx_v_child_grid = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_OctreeGrid *)Py_None); Py_INCREF(Py_None);
+  __pyx_v_child_leftedges = ((PyArrayObject *)Py_None); Py_INCREF(Py_None);
+  __pyx_v_s = Py_None; Py_INCREF(Py_None);
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   __pyx_bstruct_fields.buf = NULL;
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-  __pyx_v_child_leftedges = ((PyArrayObject *)Py_None); Py_INCREF(Py_None);
   __pyx_bstruct_child_leftedges.buf = NULL;
-  __pyx_v_s = Py_None; Py_INCREF(Py_None);
+  __pyx_bstruct_output.buf = NULL;
+  __pyx_bstruct_refined.buf = NULL;
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+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_output, &__pyx_bstruct_output, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_refined, &__pyx_bstruct_refined, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 1) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_refined, &__pyx_bstruct_refined, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 1, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -860,7 +1136,7 @@
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-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_1, &__pyx_bstruct_child_indices, PyBUF_FORMAT| PyBUF_STRIDES, 3) == -1)) {
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-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_2, &__pyx_bstruct_dimensions, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {
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-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_3, &__pyx_bstruct_fields, PyBUF_FORMAT| PyBUF_STRIDES, 4) == -1)) {
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+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 6); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  7:
+      values[7] = PyDict_GetItem(__pyx_kwds, __pyx_kp_gi);
+      if (likely(values[7])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 7); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  8:
+      values[8] = PyDict_GetItem(__pyx_kwds, __pyx_kp_output);
+      if (likely(values[8])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 8); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case  9:
+      values[9] = PyDict_GetItem(__pyx_kwds, __pyx_kp_genealogy);
+      if (likely(values[9])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 9); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case 10:
+      values[10] = PyDict_GetItem(__pyx_kwds, __pyx_kp_corners);
+      if (likely(values[10])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 10); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+      case 11:
+      values[11] = PyDict_GetItem(__pyx_kwds, __pyx_kp_grids);
+      if (likely(values[11])) kw_args--;
+      else {
+        __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, 11); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    }
+    if (unlikely(kw_args > 0)) {
+      if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, PyTuple_GET_SIZE(__pyx_args), "RecurseOctreeByLevels") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    }
+    __pyx_v_i_i = __pyx_PyInt_int(values[0]); if (unlikely((__pyx_v_i_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_j_i = __pyx_PyInt_int(values[1]); if (unlikely((__pyx_v_j_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_k_i = __pyx_PyInt_int(values[2]); if (unlikely((__pyx_v_k_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_i_f = __pyx_PyInt_int(values[3]); if (unlikely((__pyx_v_i_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_j_f = __pyx_PyInt_int(values[4]); if (unlikely((__pyx_v_j_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_k_f = __pyx_PyInt_int(values[5]); if (unlikely((__pyx_v_k_f == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_curpos = ((PyArrayObject *)values[6]);
+    __pyx_v_gi = __pyx_PyInt_int(values[7]); if (unlikely((__pyx_v_gi == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_output = ((PyArrayObject *)values[8]);
+    __pyx_v_genealogy = ((PyArrayObject *)values[9]);
+    __pyx_v_corners = ((PyArrayObject *)values[10]);
+    __pyx_v_grids = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_OctreeGridList *)values[11]);
+  } else if (PyTuple_GET_SIZE(__pyx_args) != 12) {
+    goto __pyx_L5_argtuple_error;
+  } else {
     __pyx_v_i_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 0)); if (unlikely((__pyx_v_i_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     __pyx_v_j_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 1)); if (unlikely((__pyx_v_j_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     __pyx_v_k_i = __pyx_PyInt_int(PyTuple_GET_ITEM(__pyx_args, 2)); if (unlikely((__pyx_v_k_i == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
@@ -1541,37 +1917,40 @@
     __pyx_v_corners = ((PyArrayObject *)PyTuple_GET_ITEM(__pyx_args, 10));
     __pyx_v_grids = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_OctreeGridList *)PyTuple_GET_ITEM(__pyx_args, 11));
   }
-  else {
-    if (unlikely(!PyArg_ParseTupleAndKeywords(__pyx_args, __pyx_kwds, "iiiiiiOiOOOO", __pyx_argnames, &__pyx_v_i_i, &__pyx_v_j_i, &__pyx_v_k_i, &__pyx_v_i_f, &__pyx_v_j_f, &__pyx_v_k_f, &__pyx_v_curpos, &__pyx_v_gi, &__pyx_v_output, &__pyx_v_genealogy, &__pyx_v_corners, &__pyx_v_grids))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
-  }
-  goto __pyx_L4;
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("RecurseOctreeByLevels", 1, 12, 12, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("yt.lagos.DepthFirstOctree.RecurseOctreeByLevels");
   return NULL;
-  __pyx_L4:;
+  __pyx_L4_argument_unpacking_done:;
   __pyx_v_child_grid = ((struct __pyx_obj_2yt_5lagos_16DepthFirstOctree_OctreeGrid *)Py_None); Py_INCREF(Py_None);
+  __pyx_v_child_leftedges = ((PyArrayObject *)Py_None); Py_INCREF(Py_None);
+  __pyx_v_s = Py_None; Py_INCREF(Py_None);
   __pyx_bstruct_child_indices.buf = NULL;
   __pyx_bstruct_dimensions.buf = NULL;
   __pyx_bstruct_fields.buf = NULL;
   __pyx_bstruct_leftedges.buf = NULL;
-  __pyx_v_child_leftedges = ((PyArrayObject *)Py_None); Py_INCREF(Py_None);
   __pyx_bstruct_child_leftedges.buf = NULL;
-  __pyx_v_s = Py_None; Py_INCREF(Py_None);
+  __pyx_bstruct_curpos.buf = NULL;
+  __pyx_bstruct_output.buf = NULL;
+  __pyx_bstruct_genealogy.buf = NULL;
+  __pyx_bstruct_corners.buf = NULL;
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_curpos), __pyx_ptype_5numpy_ndarray, 1, "curpos", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_output), __pyx_ptype_5numpy_ndarray, 1, "output", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_genealogy), __pyx_ptype_5numpy_ndarray, 1, "genealogy", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_corners), __pyx_ptype_5numpy_ndarray, 1, "corners", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_grids), __pyx_ptype_2yt_5lagos_16DepthFirstOctree_OctreeGridList, 1, "grids", 0))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_curpos, &__pyx_bstruct_curpos, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 1) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_curpos, &__pyx_bstruct_curpos, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 1, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_curpos = __pyx_bstruct_curpos.strides[0];
   __pyx_bshape_0_curpos = __pyx_bstruct_curpos.shape[0];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_output, &__pyx_bstruct_output, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_output, &__pyx_bstruct_output, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_output = __pyx_bstruct_output.strides[0]; __pyx_bstride_1_output = __pyx_bstruct_output.strides[1];
   __pyx_bshape_0_output = __pyx_bstruct_output.shape[0]; __pyx_bshape_1_output = __pyx_bstruct_output.shape[1];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_genealogy, &__pyx_bstruct_genealogy, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_v_genealogy, &__pyx_bstruct_genealogy, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_genealogy = __pyx_bstruct_genealogy.strides[0]; __pyx_bstride_1_genealogy = __pyx_bstruct_genealogy.strides[1];
   __pyx_bshape_0_genealogy = __pyx_bstruct_genealogy.shape[0]; __pyx_bshape_1_genealogy = __pyx_bstruct_genealogy.shape[1];
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_corners, &__pyx_bstruct_corners, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_corners, &__pyx_bstruct_corners, PyBUF_FORMAT| PyBUF_STRIDES| PyBUF_WRITABLE, 2, 0) == -1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_bstride_0_corners = __pyx_bstruct_corners.strides[0]; __pyx_bstride_1_corners = __pyx_bstruct_corners.strides[1];
   __pyx_bshape_0_corners = __pyx_bstruct_corners.shape[0]; __pyx_bshape_1_corners = __pyx_bstruct_corners.shape[1];
 
@@ -1606,7 +1985,7 @@
  */
   if (!(__Pyx_TypeTest(__pyx_v_grid->child_indices, __pyx_ptype_5numpy_ndarray))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_1 = ((PyArrayObject *)__pyx_v_grid->child_indices);
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_1, &__pyx_bstruct_child_indices, PyBUF_FORMAT| PyBUF_STRIDES, 3) == -1)) {
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_1, &__pyx_bstruct_child_indices, PyBUF_FORMAT| PyBUF_STRIDES, 3, 0) == -1)) {
     __pyx_v_child_indices = ((PyArrayObject *)Py_None); Py_INCREF(Py_None); __pyx_bstruct_child_indices.buf = NULL;
     {__pyx_filename = __pyx_f[0]; __pyx_lineno = 123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   } else {__pyx_bstride_0_child_indices = __pyx_bstruct_child_indices.strides[0]; __pyx_bstride_1_child_indices = __pyx_bstruct_child_indices.strides[1]; __pyx_bstride_2_child_indices = __pyx_bstruct_child_indices.strides[2];
@@ -1625,7 +2004,7 @@
  */
   if (!(__Pyx_TypeTest(__pyx_v_grid->dimensions, __pyx_ptype_5numpy_ndarray))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_2 = ((PyArrayObject *)__pyx_v_grid->dimensions);
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_2, &__pyx_bstruct_dimensions, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t((PyObject*)__pyx_t_2, &__pyx_bstruct_dimensions, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {
     __pyx_v_dimensions = ((PyArrayObject *)Py_None); Py_INCREF(Py_None); __pyx_bstruct_dimensions.buf = NULL;
     {__pyx_filename = __pyx_f[0]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   } else {__pyx_bstride_0_dimensions = __pyx_bstruct_dimensions.strides[0];
@@ -1644,7 +2023,7 @@
  */
   if (!(__Pyx_TypeTest(__pyx_v_grid->fields, __pyx_ptype_5numpy_ndarray))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_3 = ((PyArrayObject *)__pyx_v_grid->fields);
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_3, &__pyx_bstruct_fields, PyBUF_FORMAT| PyBUF_STRIDES, 4) == -1)) {
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_3, &__pyx_bstruct_fields, PyBUF_FORMAT| PyBUF_STRIDES, 4, 0) == -1)) {
     __pyx_v_fields = ((PyArrayObject *)Py_None); Py_INCREF(Py_None); __pyx_bstruct_fields.buf = NULL;
     {__pyx_filename = __pyx_f[0]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   } else {__pyx_bstride_0_fields = __pyx_bstruct_fields.strides[0]; __pyx_bstride_1_fields = __pyx_bstruct_fields.strides[1]; __pyx_bstride_2_fields = __pyx_bstruct_fields.strides[2]; __pyx_bstride_3_fields = __pyx_bstruct_fields.strides[3];
@@ -1663,7 +2042,7 @@
  */
   if (!(__Pyx_TypeTest(__pyx_v_grid->left_edges, __pyx_ptype_5numpy_ndarray))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_4 = ((PyArrayObject *)__pyx_v_grid->left_edges);
-  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_4, &__pyx_bstruct_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {
+  if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_4, &__pyx_bstruct_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {
     __pyx_v_leftedges = ((PyArrayObject *)Py_None); Py_INCREF(Py_None); __pyx_bstruct_leftedges.buf = NULL;
     {__pyx_filename = __pyx_f[0]; __pyx_lineno = 126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   } else {__pyx_bstride_0_leftedges = __pyx_bstruct_leftedges.strides[0];
@@ -1690,7 +2069,7 @@
  *     cdef int cp
  *     for i_off in range(i_f):             # <<<<<<<<<<<<<<
  *         i = i_off + i_i
- *         cz = (leftedges[2] + k*dx)
+ *         cx = (leftedges[0] + i*dx)
  */
   for (__pyx_v_i_off = 0; __pyx_v_i_off < __pyx_v_i_f; __pyx_v_i_off+=1) {
 
@@ -1698,7 +2077,7 @@
  *     cdef int cp
  *     for i_off in range(i_f):
  *         i = i_off + i_i             # <<<<<<<<<<<<<<
- *         cz = (leftedges[2] + k*dx)
+ *         cx = (leftedges[0] + i*dx)
  *         if i_f > 2: print k, cz
  */
     __pyx_v_i = (__pyx_v_i_off + __pyx_v_i_i);
@@ -1706,18 +2085,17 @@
     /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":134
  *     for i_off in range(i_f):
  *         i = i_off + i_i
- *         cz = (leftedges[2] + k*dx)             # <<<<<<<<<<<<<<
+ *         cx = (leftedges[0] + i*dx)             # <<<<<<<<<<<<<<
  *         if i_f > 2: print k, cz
  *         for j_off in range(j_f):
  */
-    __pyx_t_5 = 2;
+    __pyx_t_5 = 0;
     if (__pyx_t_5 < 0) __pyx_t_5 += __pyx_bshape_0_leftedges;
-    __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_leftedges.buf, __pyx_t_5, __pyx_bstride_0_leftedges)));
-    __pyx_v_cz = (__pyx_3 + (__pyx_v_k * __pyx_v_dx));
+    __pyx_v_cx = ((*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_leftedges.buf, __pyx_t_5, __pyx_bstride_0_leftedges)) + (__pyx_v_i * __pyx_v_dx));
 
     /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":135
  *         i = i_off + i_i
- *         cz = (leftedges[2] + k*dx)
+ *         cx = (leftedges[0] + i*dx)
  *         if i_f > 2: print k, cz             # <<<<<<<<<<<<<<
  *         for j_off in range(j_f):
  *             j = j_off + j_i
@@ -1733,12 +2111,12 @@
       __pyx_5 = 0;
       if (__Pyx_Print(((PyObject *)__pyx_6), 1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       Py_DECREF(((PyObject *)__pyx_6)); __pyx_6 = 0;
-      goto __pyx_L7;
+      goto __pyx_L8;
     }
-    __pyx_L7:;
+    __pyx_L8:;
 
     /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":136
- *         cz = (leftedges[2] + k*dx)
+ *         cx = (leftedges[0] + i*dx)
  *         if i_f > 2: print k, cz
  *         for j_off in range(j_f):             # <<<<<<<<<<<<<<
  *             j = j_off + j_i
@@ -1764,15 +2142,14 @@
  */
       __pyx_t_6 = 1;
       if (__pyx_t_6 < 0) __pyx_t_6 += __pyx_bshape_0_leftedges;
-      __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_leftedges.buf, __pyx_t_6, __pyx_bstride_0_leftedges)));
-      __pyx_v_cy = (__pyx_3 + (__pyx_v_j * __pyx_v_dx));
+      __pyx_v_cy = ((*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_leftedges.buf, __pyx_t_6, __pyx_bstride_0_leftedges)) + (__pyx_v_j * __pyx_v_dx));
 
       /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":139
  *             j = j_off + j_i
  *             cy = (leftedges[1] + j*dx)
  *             for k_off in range(k_f):             # <<<<<<<<<<<<<<
  *                 k = k_off + k_i
- *                 cp = curpos[level]
+ *                 cz = (leftedges[2] + k*dx)
  */
       for (__pyx_v_k_off = 0; __pyx_v_k_off < __pyx_v_k_f; __pyx_v_k_off+=1) {
 
@@ -1780,38 +2157,36 @@
  *             cy = (leftedges[1] + j*dx)
  *             for k_off in range(k_f):
  *                 k = k_off + k_i             # <<<<<<<<<<<<<<
+ *                 cz = (leftedges[2] + k*dx)
  *                 cp = curpos[level]
- *                 cx = (leftedges[0] + i*dx)
  */
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  *             for k_off in range(k_f):
  *                 k = k_off + k_i
- *                 cp = curpos[level]             # <<<<<<<<<<<<<<
- *                 cx = (leftedges[0] + i*dx)
+ *                 cz = (leftedges[2] + k*dx)             # <<<<<<<<<<<<<<
+ *                 cp = curpos[level]
  *                 corners[cp, 0] = cx
  */
-        __pyx_t_7 = __pyx_v_level;
-        if (__pyx_t_7 < 0) __pyx_t_7 += __pyx_bshape_0_curpos;
-        __pyx_7 = *((__pyx_t_5numpy_int32_t *)((__pyx_t_5numpy_int32_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_curpos.buf, __pyx_t_7, __pyx_bstride_0_curpos)));
-        __pyx_v_cp = __pyx_7;
+        __pyx_t_7 = 2;
+        if (__pyx_t_7 < 0) __pyx_t_7 += __pyx_bshape_0_leftedges;
+        __pyx_v_cz = ((*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_leftedges.buf, __pyx_t_7, __pyx_bstride_0_leftedges)) + (__pyx_v_k * __pyx_v_dx));
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":142
  *                 k = k_off + k_i
- *                 cp = curpos[level]
- *                 cx = (leftedges[0] + i*dx)             # <<<<<<<<<<<<<<
+ *                 cz = (leftedges[2] + k*dx)
+ *                 cp = curpos[level]             # <<<<<<<<<<<<<<
  *                 corners[cp, 0] = cx
  *                 corners[cp, 1] = cy
  */
-        __pyx_t_8 = 0;
-        if (__pyx_t_8 < 0) __pyx_t_8 += __pyx_bshape_0_leftedges;
-        __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_leftedges.buf, __pyx_t_8, __pyx_bstride_0_leftedges)));
-        __pyx_v_cx = (__pyx_3 + (__pyx_v_i * __pyx_v_dx));
+        __pyx_t_8 = __pyx_v_level;
+        if (__pyx_t_8 < 0) __pyx_t_8 += __pyx_bshape_0_curpos;
+        __pyx_v_cp = (*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_int32_t *, __pyx_bstruct_curpos.buf, __pyx_t_8, __pyx_bstride_0_curpos));
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":143
+ *                 cz = (leftedges[2] + k*dx)
  *                 cp = curpos[level]
- *                 cx = (leftedges[0] + i*dx)
  *                 corners[cp, 0] = cx             # <<<<<<<<<<<<<<
  *                 corners[cp, 1] = cy
  *                 corners[cp, 2] = cz
@@ -1820,10 +2195,10 @@
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-        *((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided2d(__pyx_bstruct_corners.buf, __pyx_t_9, __pyx_bstride_0_corners, __pyx_t_10, __pyx_bstride_1_corners)) = __pyx_v_cx;
+        *__Pyx_BufPtrStrided2d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_corners.buf, __pyx_t_9, __pyx_bstride_0_corners, __pyx_t_10, __pyx_bstride_1_corners) = __pyx_v_cx;
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":144
- *                 cx = (leftedges[0] + i*dx)
+ *                 cp = curpos[level]
  *                 corners[cp, 0] = cx
  *                 corners[cp, 1] = cy             # <<<<<<<<<<<<<<
  *                 corners[cp, 2] = cz
@@ -1833,7 +2208,7 @@
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         if (__pyx_t_12 < 0) __pyx_t_12 += __pyx_bshape_1_corners;
-        *((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided2d(__pyx_bstruct_corners.buf, __pyx_t_11, __pyx_bstride_0_corners, __pyx_t_12, __pyx_bstride_1_corners)) = __pyx_v_cy;
+        *__Pyx_BufPtrStrided2d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_corners.buf, __pyx_t_11, __pyx_bstride_0_corners, __pyx_t_12, __pyx_bstride_1_corners) = __pyx_v_cy;
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":145
  *                 corners[cp, 0] = cx
@@ -1846,7 +2221,7 @@
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         if (__pyx_t_13 < 0) __pyx_t_13 += __pyx_bshape_0_corners;
         if (__pyx_t_14 < 0) __pyx_t_14 += __pyx_bshape_1_corners;
-        *((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided2d(__pyx_bstruct_corners.buf, __pyx_t_13, __pyx_bstride_0_corners, __pyx_t_14, __pyx_bstride_1_corners)) = __pyx_v_cz;
+        *__Pyx_BufPtrStrided2d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_corners.buf, __pyx_t_13, __pyx_bstride_0_corners, __pyx_t_14, __pyx_bstride_1_corners) = __pyx_v_cz;
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":146
  *                 corners[cp, 1] = cy
@@ -1857,12 +2232,11 @@
  */
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         if (__pyx_t_15 < 0) __pyx_t_15 += __pyx_bshape_0_curpos;
-        __pyx_7 = *((__pyx_t_5numpy_int32_t *)((__pyx_t_5numpy_int32_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_curpos.buf, __pyx_t_15, __pyx_bstride_0_curpos)));
-        __pyx_t_16 = __pyx_7;
+        __pyx_t_16 = (*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_int32_t *, __pyx_bstruct_curpos.buf, __pyx_t_15, __pyx_bstride_0_curpos));
         __pyx_t_17 = 2;
         if (__pyx_t_16 < 0) __pyx_t_16 += __pyx_bshape_0_genealogy;
         if (__pyx_t_17 < 0) __pyx_t_17 += __pyx_bshape_1_genealogy;
-        *((__pyx_t_5numpy_int32_t *)__Pyx_BufPtrStrided2d(__pyx_bstruct_genealogy.buf, __pyx_t_16, __pyx_bstride_0_genealogy, __pyx_t_17, __pyx_bstride_1_genealogy)) = __pyx_v_level;
+        *__Pyx_BufPtrStrided2d(__pyx_t_5numpy_int32_t *, __pyx_bstruct_genealogy.buf, __pyx_t_16, __pyx_bstride_0_genealogy, __pyx_t_17, __pyx_bstride_1_genealogy) = __pyx_v_level;
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":148
  *                 genealogy[curpos[level], 2] = level
@@ -1871,8 +2245,8 @@
  *                     output[cp,fi] = fields[fi,i,j,k]
  *                 ci = child_indices[i,j,k]
  */
-        __pyx_8 = (__pyx_v_fields->dimensions[0]);
-        for (__pyx_v_fi = 0; __pyx_v_fi < __pyx_8; __pyx_v_fi+=1) {
+        __pyx_7 = (__pyx_v_fields->dimensions[0]);
+        for (__pyx_v_fi = 0; __pyx_v_fi < __pyx_7; __pyx_v_fi+=1) {
 
           /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":149
  *                 # always output data
@@ -1889,12 +2263,11 @@
           if (__pyx_t_19 < 0) __pyx_t_19 += __pyx_bshape_1_fields;
           if (__pyx_t_20 < 0) __pyx_t_20 += __pyx_bshape_2_fields;
           if (__pyx_t_21 < 0) __pyx_t_21 += __pyx_bshape_3_fields;
-          __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided4d(__pyx_bstruct_fields.buf, __pyx_t_18, __pyx_bstride_0_fields, __pyx_t_19, __pyx_bstride_1_fields, __pyx_t_20, __pyx_bstride_2_fields, __pyx_t_21, __pyx_bstride_3_fields)));
           __pyx_t_22 = __pyx_v_cp;
           __pyx_t_23 = __pyx_v_fi;
           if (__pyx_t_22 < 0) __pyx_t_22 += __pyx_bshape_0_output;
           if (__pyx_t_23 < 0) __pyx_t_23 += __pyx_bshape_1_output;
-          *((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided2d(__pyx_bstruct_output.buf, __pyx_t_22, __pyx_bstride_0_output, __pyx_t_23, __pyx_bstride_1_output)) = __pyx_3;
+          *__Pyx_BufPtrStrided2d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_output.buf, __pyx_t_22, __pyx_bstride_0_output, __pyx_t_23, __pyx_bstride_1_output) = (*__Pyx_BufPtrStrided4d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_fields.buf, __pyx_t_18, __pyx_bstride_0_fields, __pyx_t_19, __pyx_bstride_1_fields, __pyx_t_20, __pyx_bstride_2_fields, __pyx_t_21, __pyx_bstride_3_fields));
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         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":150
@@ -1910,8 +2283,7 @@
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         if (__pyx_t_25 < 0) __pyx_t_25 += __pyx_bshape_1_child_indices;
         if (__pyx_t_26 < 0) __pyx_t_26 += __pyx_bshape_2_child_indices;
-        __pyx_7 = *((__pyx_t_5numpy_int32_t *)((__pyx_t_5numpy_int32_t *)__Pyx_BufPtrStrided3d(__pyx_bstruct_child_indices.buf, __pyx_t_24, __pyx_bstride_0_child_indices, __pyx_t_25, __pyx_bstride_1_child_indices, __pyx_t_26, __pyx_bstride_2_child_indices)));
-        __pyx_v_ci = __pyx_7;
+        __pyx_v_ci = (*__Pyx_BufPtrStrided3d(__pyx_t_5numpy_int32_t *, __pyx_bstruct_child_indices.buf, __pyx_t_24, __pyx_bstride_0_child_indices, __pyx_t_25, __pyx_bstride_1_child_indices, __pyx_t_26, __pyx_bstride_2_child_indices));
 
         /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":151
  *                     output[cp,fi] = fields[fi,i,j,k]
@@ -1958,12 +2330,12 @@
  */
           if (!(__Pyx_TypeTest(__pyx_v_child_grid->left_edges, __pyx_ptype_5numpy_ndarray))) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_t_27 = ((PyArrayObject *)__pyx_v_child_grid->left_edges);
-          __Pyx_SafeReleaseBuffer((PyObject*)__pyx_v_child_leftedges, &__pyx_bstruct_child_leftedges);
-          __pyx_t_28 = __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_27, &__pyx_bstruct_child_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1);
+          __Pyx_SafeReleaseBuffer(&__pyx_bstruct_child_leftedges);
+          __pyx_t_28 = __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_t_27, &__pyx_bstruct_child_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0);
           if (unlikely(__pyx_t_28 < 0)) 
           {
               PyErr_Fetch(&__pyx_t_29, &__pyx_t_30, &__pyx_t_31);
-              if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_child_leftedges, &__pyx_bstruct_child_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1) == -1)) {
+              if (unlikely(__Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t((PyObject*)__pyx_v_child_leftedges, &__pyx_bstruct_child_leftedges, PyBUF_FORMAT| PyBUF_STRIDES, 1, 0) == -1)) {
                   Py_XDECREF(__pyx_t_29); Py_XDECREF(__pyx_t_30); Py_XDECREF(__pyx_t_31);
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@@ -1987,16 +2359,15 @@
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           __pyx_t_32 = 0;
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-          __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_child_leftedges.buf, __pyx_t_32, __pyx_bstride_0_child_leftedges)));
-          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cx - __pyx_3) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cx - (*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_child_leftedges.buf, __pyx_t_32, __pyx_bstride_0_child_leftedges))) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           PyTuple_SET_ITEM(__pyx_2, 0, __pyx_6);
           __pyx_6 = 0;
-          __pyx_5 = PyObject_Call(((PyObject*)&PyInt_Type), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_5 = PyObject_Call(((PyObject *)((PyObject*)&PyInt_Type)), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
-          __pyx_9 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_8 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_8 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(__pyx_5); __pyx_5 = 0;
-          __pyx_v_child_i = __pyx_9;
+          __pyx_v_child_i = __pyx_8;
 
           /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":156
  *                     child_leftedges = child_grid.left_edges
@@ -2007,16 +2378,15 @@
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           __pyx_t_33 = 1;
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-          __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_child_leftedges.buf, __pyx_t_33, __pyx_bstride_0_child_leftedges)));
-          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cy - __pyx_3) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cy - (*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_child_leftedges.buf, __pyx_t_33, __pyx_bstride_0_child_leftedges))) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           PyTuple_SET_ITEM(__pyx_2, 0, __pyx_6);
           __pyx_6 = 0;
-          __pyx_5 = PyObject_Call(((PyObject*)&PyInt_Type), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_5 = PyObject_Call(((PyObject *)((PyObject*)&PyInt_Type)), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
-          __pyx_9 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_8 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_8 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(__pyx_5); __pyx_5 = 0;
-          __pyx_v_child_j = __pyx_9;
+          __pyx_v_child_j = __pyx_8;
 
           /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":157
  *                     child_i = int((cx-child_leftedges[0])/child_dx)
@@ -2027,16 +2397,15 @@
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           __pyx_t_34 = 2;
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-          __pyx_3 = *((__pyx_t_5numpy_float64_t *)((__pyx_t_5numpy_float64_t *)__Pyx_BufPtrStrided1d(__pyx_bstruct_child_leftedges.buf, __pyx_t_34, __pyx_bstride_0_child_leftedges)));
-          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cz - __pyx_3) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_6 = PyFloat_FromDouble(((__pyx_v_cz - (*__Pyx_BufPtrStrided1d(__pyx_t_5numpy_float64_t *, __pyx_bstruct_child_leftedges.buf, __pyx_t_34, __pyx_bstride_0_child_leftedges))) / __pyx_v_child_dx)); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           PyTuple_SET_ITEM(__pyx_2, 0, __pyx_6);
           __pyx_6 = 0;
-          __pyx_5 = PyObject_Call(((PyObject*)&PyInt_Type), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_5 = PyObject_Call(((PyObject *)((PyObject*)&PyInt_Type)), ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
-          __pyx_9 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_8 = __pyx_PyInt_int(__pyx_5); if (unlikely((__pyx_8 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 157; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           Py_DECREF(__pyx_5); __pyx_5 = 0;
-          __pyx_v_child_k = __pyx_9;
+          __pyx_v_child_k = __pyx_8;
 
           /* "/Users/matthewturk/Development/yt/trunk/yt/lagos/DepthFirstOctree.pyx":159
  *                     child_k = int((cz-child_leftedges[2])/child_dx)
@@ -2047,12 +2416,11 @@
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           __pyx_t_35 = (__pyx_v_level + 1);
           if (__pyx_t_35 < 0) __pyx_t_35 += __pyx_bshape_0_curpos;
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+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":65
+ *             if ((flags & pybuf.PyBUF_C_CONTIGUOUS == pybuf.PyBUF_C_CONTIGUOUS)
+ *                 and not PyArray_CHKFLAGS(self, NPY_C_CONTIGUOUS)):
+ *                 raise ValueError("ndarray is not C contiguous")             # <<<<<<<<<<<<<<
+ * 
+ *             if ((flags & pybuf.PyBUF_F_CONTIGUOUS == pybuf.PyBUF_F_CONTIGUOUS)
+ */
+    __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     Py_INCREF(__pyx_kp_1);
     PyTuple_SET_ITEM(__pyx_2, 0, __pyx_kp_1);
-    __pyx_3 = PyObject_Call(__pyx_builtin_RuntimeError, ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_3 = PyObject_Call(__pyx_builtin_ValueError, ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
     __Pyx_Raise(__pyx_3, 0, 0);
     Py_DECREF(__pyx_3); __pyx_3 = 0;
-    {__pyx_filename = __pyx_f[1]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    goto __pyx_L5;
+    {__pyx_filename = __pyx_f[1]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    goto __pyx_L6;
   }
-  __pyx_L5:;
+  __pyx_L6:;
+
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":67
+ *                 raise ValueError("ndarray is not C contiguous")
+ * 
+ *             if ((flags & pybuf.PyBUF_F_CONTIGUOUS == pybuf.PyBUF_F_CONTIGUOUS)             # <<<<<<<<<<<<<<
+ *                 and not PyArray_CHKFLAGS(self, NPY_F_CONTIGUOUS)):
+ *                 raise ValueError("ndarray is not Fortran contiguous")
+ */
+  __pyx_1 = ((__pyx_v_flags & PyBUF_F_CONTIGUOUS) == PyBUF_F_CONTIGUOUS);
+  if (__pyx_1) {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":68
+ * 
+ *             if ((flags & pybuf.PyBUF_F_CONTIGUOUS == pybuf.PyBUF_F_CONTIGUOUS)
+ *                 and not PyArray_CHKFLAGS(self, NPY_F_CONTIGUOUS)):             # <<<<<<<<<<<<<<
+ *                 raise ValueError("ndarray is not Fortran contiguous")
+ * 
+ */
+    __pyx_1 = (!PyArray_CHKFLAGS(((PyArrayObject *)__pyx_v_self), NPY_F_CONTIGUOUS));
+  }
+  if (__pyx_1) {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":69
+ *             if ((flags & pybuf.PyBUF_F_CONTIGUOUS == pybuf.PyBUF_F_CONTIGUOUS)
+ *                 and not PyArray_CHKFLAGS(self, NPY_F_CONTIGUOUS)):
+ *                 raise ValueError("ndarray is not Fortran contiguous")             # <<<<<<<<<<<<<<
+ * 
+ *             info.buf = PyArray_DATA(self)
+ */
+    __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    Py_INCREF(__pyx_kp_2);
+    PyTuple_SET_ITEM(__pyx_2, 0, __pyx_kp_2);
+    __pyx_3 = PyObject_Call(__pyx_builtin_ValueError, ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
+    __Pyx_Raise(__pyx_3, 0, 0);
+    Py_DECREF(__pyx_3); __pyx_3 = 0;
+    {__pyx_filename = __pyx_f[1]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    goto __pyx_L7;
+  }
+  __pyx_L7:;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":45
- *                 raise RuntimeError("Py_intptr_t and Py_ssize_t differs in size, numpy.pxd does not support this")
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":71
+ *                 raise ValueError("ndarray is not Fortran contiguous")
  * 
  *             info.buf = PyArray_DATA(self)             # <<<<<<<<<<<<<<
- *             info.ndim = PyArray_NDIM(self)
- *             info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
+ *             info.ndim = ndim
+ *             if copy_shape:
  */
   __pyx_v_info->buf = PyArray_DATA(((PyArrayObject *)__pyx_v_self));
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":46
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":72
  * 
  *             info.buf = PyArray_DATA(self)
- *             info.ndim = PyArray_NDIM(self)             # <<<<<<<<<<<<<<
- *             info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
- *             info.shape = <Py_ssize_t*>PyArray_DIMS(self)
+ *             info.ndim = ndim             # <<<<<<<<<<<<<<
+ *             if copy_shape:
+ *                 # Allocate new buffer for strides and shape info. This is allocated
  */
-  __pyx_v_info->ndim = PyArray_NDIM(((PyArrayObject *)__pyx_v_self));
+  __pyx_v_info->ndim = __pyx_v_ndim;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":47
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":73
  *             info.buf = PyArray_DATA(self)
- *             info.ndim = PyArray_NDIM(self)
- *             info.strides = <Py_ssize_t*>PyArray_STRIDES(self)             # <<<<<<<<<<<<<<
- *             info.shape = <Py_ssize_t*>PyArray_DIMS(self)
+ *             info.ndim = ndim
+ *             if copy_shape:             # <<<<<<<<<<<<<<
+ *                 # Allocate new buffer for strides and shape info. This is allocated
+ *                 # as one block, strides first.
+ */
+  __pyx_4 = __pyx_v_copy_shape;
+  if (__pyx_4) {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":76
+ *                 # Allocate new buffer for strides and shape info. This is allocated
+ *                 # as one block, strides first.
+ *                 info.strides = <Py_ssize_t*>stdlib.malloc(sizeof(Py_ssize_t) * ndim * 2)             # <<<<<<<<<<<<<<
+ *                 info.shape = info.strides + ndim
+ *                 for i in range(ndim):
+ */
+    __pyx_v_info->strides = ((Py_ssize_t *)malloc((((sizeof(Py_ssize_t)) * __pyx_v_ndim) * 2)));
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":77
+ *                 # as one block, strides first.
+ *                 info.strides = <Py_ssize_t*>stdlib.malloc(sizeof(Py_ssize_t) * ndim * 2)
+ *                 info.shape = info.strides + ndim             # <<<<<<<<<<<<<<
+ *                 for i in range(ndim):
+ *                     info.strides[i] = PyArray_STRIDES(self)[i]
+ */
+    __pyx_v_info->shape = (__pyx_v_info->strides + __pyx_v_ndim);
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":78
+ *                 info.strides = <Py_ssize_t*>stdlib.malloc(sizeof(Py_ssize_t) * ndim * 2)
+ *                 info.shape = info.strides + ndim
+ *                 for i in range(ndim):             # <<<<<<<<<<<<<<
+ *                     info.strides[i] = PyArray_STRIDES(self)[i]
+ *                     info.shape[i] = PyArray_DIMS(self)[i]
+ */
+    for (__pyx_v_i = 0; __pyx_v_i < __pyx_v_ndim; __pyx_v_i+=1) {
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":79
+ *                 info.shape = info.strides + ndim
+ *                 for i in range(ndim):
+ *                     info.strides[i] = PyArray_STRIDES(self)[i]             # <<<<<<<<<<<<<<
+ *                     info.shape[i] = PyArray_DIMS(self)[i]
+ *             else:
+ */
+      (__pyx_v_info->strides[__pyx_v_i]) = (PyArray_STRIDES(((PyArrayObject *)__pyx_v_self))[__pyx_v_i]);
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":80
+ *                 for i in range(ndim):
+ *                     info.strides[i] = PyArray_STRIDES(self)[i]
+ *                     info.shape[i] = PyArray_DIMS(self)[i]             # <<<<<<<<<<<<<<
+ *             else:
+ *                 info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
+ */
+      (__pyx_v_info->shape[__pyx_v_i]) = (PyArray_DIMS(((PyArrayObject *)__pyx_v_self))[__pyx_v_i]);
+    }
+    goto __pyx_L8;
+  }
+  /*else*/ {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":82
+ *                     info.shape[i] = PyArray_DIMS(self)[i]
+ *             else:
+ *                 info.strides = <Py_ssize_t*>PyArray_STRIDES(self)             # <<<<<<<<<<<<<<
+ *                 info.shape = <Py_ssize_t*>PyArray_DIMS(self)
  *             info.suboffsets = NULL
  */
-  __pyx_v_info->strides = ((Py_ssize_t *)PyArray_STRIDES(((PyArrayObject *)__pyx_v_self)));
+    __pyx_v_info->strides = ((Py_ssize_t *)PyArray_STRIDES(((PyArrayObject *)__pyx_v_self)));
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":48
- *             info.ndim = PyArray_NDIM(self)
- *             info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
- *             info.shape = <Py_ssize_t*>PyArray_DIMS(self)             # <<<<<<<<<<<<<<
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":83
+ *             else:
+ *                 info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
+ *                 info.shape = <Py_ssize_t*>PyArray_DIMS(self)             # <<<<<<<<<<<<<<
  *             info.suboffsets = NULL
  *             info.itemsize = PyArray_ITEMSIZE(self)
  */
-  __pyx_v_info->shape = ((Py_ssize_t *)PyArray_DIMS(((PyArrayObject *)__pyx_v_self)));
+    __pyx_v_info->shape = ((Py_ssize_t *)PyArray_DIMS(((PyArrayObject *)__pyx_v_self)));
+  }
+  __pyx_L8:;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":49
- *             info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
- *             info.shape = <Py_ssize_t*>PyArray_DIMS(self)
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":84
+ *                 info.strides = <Py_ssize_t*>PyArray_STRIDES(self)
+ *                 info.shape = <Py_ssize_t*>PyArray_DIMS(self)
  *             info.suboffsets = NULL             # <<<<<<<<<<<<<<
  *             info.itemsize = PyArray_ITEMSIZE(self)
  *             info.readonly = not PyArray_ISWRITEABLE(self)
  */
   __pyx_v_info->suboffsets = NULL;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":50
- *             info.shape = <Py_ssize_t*>PyArray_DIMS(self)
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":85
+ *                 info.shape = <Py_ssize_t*>PyArray_DIMS(self)
  *             info.suboffsets = NULL
  *             info.itemsize = PyArray_ITEMSIZE(self)             # <<<<<<<<<<<<<<
  *             info.readonly = not PyArray_ISWRITEABLE(self)
@@ -2315,251 +2852,987 @@
  */
   __pyx_v_info->itemsize = PyArray_ITEMSIZE(((PyArrayObject *)__pyx_v_self));
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":51
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":86
  *             info.suboffsets = NULL
  *             info.itemsize = PyArray_ITEMSIZE(self)
  *             info.readonly = not PyArray_ISWRITEABLE(self)             # <<<<<<<<<<<<<<
  * 
- *             # Formats that are not tested and working in Cython are not
+ *             cdef int t
  */
   __pyx_v_info->readonly = (!PyArray_ISWRITEABLE(((PyArrayObject *)__pyx_v_self)));
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":55
- *             # Formats that are not tested and working in Cython are not
- *             # made available from this pxd file yet.
- *             cdef int t = PyArray_TYPE(self)             # <<<<<<<<<<<<<<
- *             cdef char* f = NULL
- *             if   t == NPY_BYTE:       f = "b"
- */
-  __pyx_v_t = PyArray_TYPE(((PyArrayObject *)__pyx_v_self));
-
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":56
- *             # made available from this pxd file yet.
- *             cdef int t = PyArray_TYPE(self)
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":89
+ * 
+ *             cdef int t
  *             cdef char* f = NULL             # <<<<<<<<<<<<<<
- *             if   t == NPY_BYTE:       f = "b"
- *             elif t == NPY_UBYTE:      f = "B"
+ *             cdef dtype descr = self.descr
+ *             cdef list stack
  */
   __pyx_v_f = NULL;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":57
- *             cdef int t = PyArray_TYPE(self)
- *             cdef char* f = NULL
- *             if   t == NPY_BYTE:       f = "b"             # <<<<<<<<<<<<<<
- *             elif t == NPY_UBYTE:      f = "B"
- *             elif t == NPY_SHORT:      f = "h"
- */
-  switch (__pyx_v_t) {
-    case NPY_BYTE:
-    __pyx_v_f = __pyx_k_2;
-    break;
-    case NPY_UBYTE:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":58
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":90
+ *             cdef int t
  *             cdef char* f = NULL
- *             if   t == NPY_BYTE:       f = "b"
- *             elif t == NPY_UBYTE:      f = "B"             # <<<<<<<<<<<<<<
- *             elif t == NPY_SHORT:      f = "h"
- *             elif t == NPY_USHORT:     f = "H"
- */
-    __pyx_v_f = __pyx_k_3;
-    break;
-    case NPY_SHORT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":59
- *             if   t == NPY_BYTE:       f = "b"
- *             elif t == NPY_UBYTE:      f = "B"
- *             elif t == NPY_SHORT:      f = "h"             # <<<<<<<<<<<<<<
- *             elif t == NPY_USHORT:     f = "H"
- *             elif t == NPY_INT:        f = "i"
- */
-    __pyx_v_f = __pyx_k_4;
-    break;
-    case NPY_USHORT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":60
- *             elif t == NPY_UBYTE:      f = "B"
- *             elif t == NPY_SHORT:      f = "h"
- *             elif t == NPY_USHORT:     f = "H"             # <<<<<<<<<<<<<<
- *             elif t == NPY_INT:        f = "i"
- *             elif t == NPY_UINT:       f = "I"
- */
-    __pyx_v_f = __pyx_k_5;
-    break;
-    case NPY_INT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":61
- *             elif t == NPY_SHORT:      f = "h"
- *             elif t == NPY_USHORT:     f = "H"
- *             elif t == NPY_INT:        f = "i"             # <<<<<<<<<<<<<<
- *             elif t == NPY_UINT:       f = "I"
- *             elif t == NPY_LONG:       f = "l"
- */
-    __pyx_v_f = __pyx_k_6;
-    break;
-    case NPY_UINT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":62
- *             elif t == NPY_USHORT:     f = "H"
- *             elif t == NPY_INT:        f = "i"
- *             elif t == NPY_UINT:       f = "I"             # <<<<<<<<<<<<<<
- *             elif t == NPY_LONG:       f = "l"
- *             elif t == NPY_ULONG:      f = "L"
- */
-    __pyx_v_f = __pyx_k_7;
-    break;
-    case NPY_LONG:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":63
- *             elif t == NPY_INT:        f = "i"
- *             elif t == NPY_UINT:       f = "I"
- *             elif t == NPY_LONG:       f = "l"             # <<<<<<<<<<<<<<
- *             elif t == NPY_ULONG:      f = "L"
- *             elif t == NPY_LONGLONG:   f = "q"
- */
-    __pyx_v_f = __pyx_k_8;
-    break;
-    case NPY_ULONG:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":64
- *             elif t == NPY_UINT:       f = "I"
- *             elif t == NPY_LONG:       f = "l"
- *             elif t == NPY_ULONG:      f = "L"             # <<<<<<<<<<<<<<
- *             elif t == NPY_LONGLONG:   f = "q"
- *             elif t == NPY_ULONGLONG:  f = "Q"
- */
-    __pyx_v_f = __pyx_k_9;
-    break;
-    case NPY_LONGLONG:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":65
- *             elif t == NPY_LONG:       f = "l"
- *             elif t == NPY_ULONG:      f = "L"
- *             elif t == NPY_LONGLONG:   f = "q"             # <<<<<<<<<<<<<<
- *             elif t == NPY_ULONGLONG:  f = "Q"
- *             elif t == NPY_FLOAT:      f = "f"
- */
-    __pyx_v_f = __pyx_k_10;
-    break;
-    case NPY_ULONGLONG:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":66
- *             elif t == NPY_ULONG:      f = "L"
- *             elif t == NPY_LONGLONG:   f = "q"
- *             elif t == NPY_ULONGLONG:  f = "Q"             # <<<<<<<<<<<<<<
- *             elif t == NPY_FLOAT:      f = "f"
- *             elif t == NPY_DOUBLE:     f = "d"
- */
-    __pyx_v_f = __pyx_k_11;
-    break;
-    case NPY_FLOAT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":67
- *             elif t == NPY_LONGLONG:   f = "q"
- *             elif t == NPY_ULONGLONG:  f = "Q"
- *             elif t == NPY_FLOAT:      f = "f"             # <<<<<<<<<<<<<<
- *             elif t == NPY_DOUBLE:     f = "d"
- *             elif t == NPY_LONGDOUBLE: f = "g"
- */
-    __pyx_v_f = __pyx_k_12;
-    break;
-    case NPY_DOUBLE:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":68
- *             elif t == NPY_ULONGLONG:  f = "Q"
- *             elif t == NPY_FLOAT:      f = "f"
- *             elif t == NPY_DOUBLE:     f = "d"             # <<<<<<<<<<<<<<
- *             elif t == NPY_LONGDOUBLE: f = "g"
- *             elif t == NPY_OBJECT:     f = "O"
- */
-    __pyx_v_f = __pyx_k_13;
-    break;
-    case NPY_LONGDOUBLE:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":69
- *             elif t == NPY_FLOAT:      f = "f"
- *             elif t == NPY_DOUBLE:     f = "d"
- *             elif t == NPY_LONGDOUBLE: f = "g"             # <<<<<<<<<<<<<<
- *             elif t == NPY_OBJECT:     f = "O"
- * 
- */
-    __pyx_v_f = __pyx_k_14;
-    break;
-    case NPY_OBJECT:
-
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":70
- *             elif t == NPY_DOUBLE:     f = "d"
- *             elif t == NPY_LONGDOUBLE: f = "g"
- *             elif t == NPY_OBJECT:     f = "O"             # <<<<<<<<<<<<<<
- * 
- *             if f == NULL:
- */
-    __pyx_v_f = __pyx_k_15;
-    break;
-  }
-
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":72
- *             elif t == NPY_OBJECT:     f = "O"
- * 
- *             if f == NULL:             # <<<<<<<<<<<<<<
- *                 raise ValueError("only objects, int and float dtypes supported for ndarray buffer access so far (dtype is %d)" % t)
- *             info.format = f
+ *             cdef dtype descr = self.descr             # <<<<<<<<<<<<<<
+ *             cdef list stack
+ * 
  */
-  __pyx_1 = (__pyx_v_f == NULL);
-  if (__pyx_1) {
+  Py_INCREF(((PyObject *)((PyArrayObject *)__pyx_v_self)->descr));
+  __pyx_v_descr = ((PyArrayObject *)__pyx_v_self)->descr;
 
-    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":73
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":93
+ *             cdef list stack
  * 
- *             if f == NULL:
- *                 raise ValueError("only objects, int and float dtypes supported for ndarray buffer access so far (dtype is %d)" % t)             # <<<<<<<<<<<<<<
- *             info.format = f
+ *             cdef bint hasfields = PyDataType_HASFIELDS(descr)             # <<<<<<<<<<<<<<
  * 
+ *             # Ugly hack warning:
  */
-    __pyx_2 = PyInt_FromLong(__pyx_v_t); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_3 = PyNumber_Remainder(__pyx_kp_16, __pyx_2); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    Py_DECREF(__pyx_2); __pyx_2 = 0;
-    __pyx_2 = PyTuple_New(1); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    PyTuple_SET_ITEM(__pyx_2, 0, __pyx_3);
-    __pyx_3 = 0;
-    __pyx_3 = PyObject_Call(__pyx_builtin_ValueError, ((PyObject *)__pyx_2), NULL); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    Py_DECREF(((PyObject *)__pyx_2)); __pyx_2 = 0;
-    __Pyx_Raise(__pyx_3, 0, 0);
-    Py_DECREF(__pyx_3); __pyx_3 = 0;
-    {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    goto __pyx_L6;
+  __pyx_v_hasfields = PyDataType_HASFIELDS(__pyx_v_descr);
+
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":103
+ *             # functions).
+ * 
+ *             if not hasfields and not copy_shape:             # <<<<<<<<<<<<<<
+ *                 # do not call releasebuffer
+ *                 info.obj = None
+ */
+  __pyx_1 = (!__pyx_v_hasfields);
+  if (__pyx_1) {
+    __pyx_1 = (!__pyx_v_copy_shape);
   }
-  __pyx_L6:;
+  if (__pyx_1) {
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":74
- *             if f == NULL:
- *                 raise ValueError("only objects, int and float dtypes supported for ndarray buffer access so far (dtype is %d)" % t)
- *             info.format = f             # <<<<<<<<<<<<<<
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":105
+ *             if not hasfields and not copy_shape:
+ *                 # do not call releasebuffer
+ *                 info.obj = None             # <<<<<<<<<<<<<<
+ *             else:
+ *                 # need to call releasebuffer
+ */
+    Py_INCREF(Py_None);
+    Py_DECREF(__pyx_v_info->obj);
+    __pyx_v_info->obj = Py_None;
+    goto __pyx_L11;
+  }
+  /*else*/ {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":108
+ *             else:
+ *                 # need to call releasebuffer
+ *                 info.obj = self             # <<<<<<<<<<<<<<
  * 
+ *             if not hasfields:
+ */
+    Py_INCREF(__pyx_v_self);
+    Py_DECREF(__pyx_v_info->obj);
+    __pyx_v_info->obj = __pyx_v_self;
+  }
+  __pyx_L11:;
+
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":110
+ *                 info.obj = self
  * 
+ *             if not hasfields:             # <<<<<<<<<<<<<<
+ *                 t = descr.type_num
+ *                 if   t == NPY_BYTE:        f = "b"
  */
-  __pyx_v_info->format = __pyx_v_f;
+  __pyx_1 = (!__pyx_v_hasfields);
+  if (__pyx_1) {
 
-  __pyx_r = 0;
-  goto __pyx_L0;
-  __pyx_L1_error:;
-  Py_XDECREF(__pyx_2);
-  Py_XDECREF(__pyx_3);
-  __Pyx_AddTraceback("numpy.ndarray.__getbuffer__");
-  __pyx_r = -1;
-  __pyx_L0:;
-  return __pyx_r;
-}
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":111
+ * 
+ *             if not hasfields:
+ *                 t = descr.type_num             # <<<<<<<<<<<<<<
+ *                 if   t == NPY_BYTE:        f = "b"
+ *                 elif t == NPY_UBYTE:       f = "B"
+ */
+    __pyx_v_t = __pyx_v_descr->type_num;
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":112
+ *             if not hasfields:
+ *                 t = descr.type_num
+ *                 if   t == NPY_BYTE:        f = "b"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_UBYTE:       f = "B"
+ *                 elif t == NPY_SHORT:       f = "h"
+ */
+    switch (__pyx_v_t) {
+      case NPY_BYTE:
+      __pyx_v_f = __pyx_k_3;
+      break;
+      case NPY_UBYTE:
 
-static PyObject *__pyx_tp_new_2yt_5lagos_16DepthFirstOctree_position(PyTypeObject *t, PyObject *a, PyObject *k) {
-  PyObject *o = (*t->tp_alloc)(t, 0);
-  if (!o) return 0;
-  if (__pyx_pf_2yt_5lagos_16DepthFirstOctree_8position___cinit__(o, __pyx_empty_tuple, NULL) < 0) {
-    Py_DECREF(o); o = 0;
-  }
-  return o;
-}
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":113
+ *                 t = descr.type_num
+ *                 if   t == NPY_BYTE:        f = "b"
+ *                 elif t == NPY_UBYTE:       f = "B"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_SHORT:       f = "h"
+ *                 elif t == NPY_USHORT:      f = "H"
+ */
+      __pyx_v_f = __pyx_k_4;
+      break;
+      case NPY_SHORT:
 
-static void __pyx_tp_dealloc_2yt_5lagos_16DepthFirstOctree_position(PyObject *o) {
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":114
+ *                 if   t == NPY_BYTE:        f = "b"
+ *                 elif t == NPY_UBYTE:       f = "B"
+ *                 elif t == NPY_SHORT:       f = "h"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_USHORT:      f = "H"
+ *                 elif t == NPY_INT:         f = "i"
+ */
+      __pyx_v_f = __pyx_k_5;
+      break;
+      case NPY_USHORT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":115
+ *                 elif t == NPY_UBYTE:       f = "B"
+ *                 elif t == NPY_SHORT:       f = "h"
+ *                 elif t == NPY_USHORT:      f = "H"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_INT:         f = "i"
+ *                 elif t == NPY_UINT:        f = "I"
+ */
+      __pyx_v_f = __pyx_k_6;
+      break;
+      case NPY_INT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":116
+ *                 elif t == NPY_SHORT:       f = "h"
+ *                 elif t == NPY_USHORT:      f = "H"
+ *                 elif t == NPY_INT:         f = "i"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_UINT:        f = "I"
+ *                 elif t == NPY_LONG:        f = "l"
+ */
+      __pyx_v_f = __pyx_k_7;
+      break;
+      case NPY_UINT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":117
+ *                 elif t == NPY_USHORT:      f = "H"
+ *                 elif t == NPY_INT:         f = "i"
+ *                 elif t == NPY_UINT:        f = "I"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_LONG:        f = "l"
+ *                 elif t == NPY_ULONG:       f = "L"
+ */
+      __pyx_v_f = __pyx_k_8;
+      break;
+      case NPY_LONG:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":118
+ *                 elif t == NPY_INT:         f = "i"
+ *                 elif t == NPY_UINT:        f = "I"
+ *                 elif t == NPY_LONG:        f = "l"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_ULONG:       f = "L"
+ *                 elif t == NPY_LONGLONG:    f = "q"
+ */
+      __pyx_v_f = __pyx_k_9;
+      break;
+      case NPY_ULONG:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":119
+ *                 elif t == NPY_UINT:        f = "I"
+ *                 elif t == NPY_LONG:        f = "l"
+ *                 elif t == NPY_ULONG:       f = "L"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_LONGLONG:    f = "q"
+ *                 elif t == NPY_ULONGLONG:   f = "Q"
+ */
+      __pyx_v_f = __pyx_k_10;
+      break;
+      case NPY_LONGLONG:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":120
+ *                 elif t == NPY_LONG:        f = "l"
+ *                 elif t == NPY_ULONG:       f = "L"
+ *                 elif t == NPY_LONGLONG:    f = "q"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_ULONGLONG:   f = "Q"
+ *                 elif t == NPY_FLOAT:       f = "f"
+ */
+      __pyx_v_f = __pyx_k_11;
+      break;
+      case NPY_ULONGLONG:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":121
+ *                 elif t == NPY_ULONG:       f = "L"
+ *                 elif t == NPY_LONGLONG:    f = "q"
+ *                 elif t == NPY_ULONGLONG:   f = "Q"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_FLOAT:       f = "f"
+ *                 elif t == NPY_DOUBLE:      f = "d"
+ */
+      __pyx_v_f = __pyx_k_12;
+      break;
+      case NPY_FLOAT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":122
+ *                 elif t == NPY_LONGLONG:    f = "q"
+ *                 elif t == NPY_ULONGLONG:   f = "Q"
+ *                 elif t == NPY_FLOAT:       f = "f"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_DOUBLE:      f = "d"
+ *                 elif t == NPY_LONGDOUBLE:  f = "g"
+ */
+      __pyx_v_f = __pyx_k_13;
+      break;
+      case NPY_DOUBLE:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":123
+ *                 elif t == NPY_ULONGLONG:   f = "Q"
+ *                 elif t == NPY_FLOAT:       f = "f"
+ *                 elif t == NPY_DOUBLE:      f = "d"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_LONGDOUBLE:  f = "g"
+ *                 elif t == NPY_CFLOAT:      f = "Zf"
+ */
+      __pyx_v_f = __pyx_k_14;
+      break;
+      case NPY_LONGDOUBLE:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":124
+ *                 elif t == NPY_FLOAT:       f = "f"
+ *                 elif t == NPY_DOUBLE:      f = "d"
+ *                 elif t == NPY_LONGDOUBLE:  f = "g"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_CFLOAT:      f = "Zf"
+ *                 elif t == NPY_CDOUBLE:     f = "Zd"
+ */
+      __pyx_v_f = __pyx_k_15;
+      break;
+      case NPY_CFLOAT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":125
+ *                 elif t == NPY_DOUBLE:      f = "d"
+ *                 elif t == NPY_LONGDOUBLE:  f = "g"
+ *                 elif t == NPY_CFLOAT:      f = "Zf"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_CDOUBLE:     f = "Zd"
+ *                 elif t == NPY_CLONGDOUBLE: f = "Zg"
+ */
+      __pyx_v_f = __pyx_k_16;
+      break;
+      case NPY_CDOUBLE:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":126
+ *                 elif t == NPY_LONGDOUBLE:  f = "g"
+ *                 elif t == NPY_CFLOAT:      f = "Zf"
+ *                 elif t == NPY_CDOUBLE:     f = "Zd"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_CLONGDOUBLE: f = "Zg"
+ *                 elif t == NPY_OBJECT:      f = "O"
+ */
+      __pyx_v_f = __pyx_k_17;
+      break;
+      case NPY_CLONGDOUBLE:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":127
+ *                 elif t == NPY_CFLOAT:      f = "Zf"
+ *                 elif t == NPY_CDOUBLE:     f = "Zd"
+ *                 elif t == NPY_CLONGDOUBLE: f = "Zg"             # <<<<<<<<<<<<<<
+ *                 elif t == NPY_OBJECT:      f = "O"
+ *                 else:
+ */
+      __pyx_v_f = __pyx_k_18;
+      break;
+      case NPY_OBJECT:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":128
+ *                 elif t == NPY_CDOUBLE:     f = "Zd"
+ *                 elif t == NPY_CLONGDOUBLE: f = "Zg"
+ *                 elif t == NPY_OBJECT:      f = "O"             # <<<<<<<<<<<<<<
+ *                 else:
+ *                     raise ValueError("unknown dtype code in numpy.pxd (%d)" % t)
+ */
+      __pyx_v_f = __pyx_k_19;
+      break;
+      default:
+
+      /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":130
+ *                 elif t == NPY_OBJECT:      f = "O"
+ *                 else:
+ *                     raise ValueError("unknown dtype code in numpy.pxd (%d)" % t)             # <<<<<<<<<<<<<<
+ *                 info.format = f
+ *                 return
+ */
+      __pyx_2 = PyInt_FromLong(__pyx_v_t); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyNumber_Remainder(__pyx_kp_20, __pyx_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      Py_DECREF(__pyx_2); __pyx_2 = 0;
+      __pyx_3 = PyTuple_New(1); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":165
+ *                         elif t == NPY_SHORT:       f[0] = 104 #"h"
+ *                         elif t == NPY_USHORT:      f[0] =  72 #"H"
+ *                         elif t == NPY_INT:         f[0] = 105 #"i"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_UINT:        f[0] =  73 #"I"
+ *                         elif t == NPY_LONG:        f[0] = 108 #"l"
+ */
+          (__pyx_v_f[0]) = 105;
+          break;
+          case NPY_UINT:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":166
+ *                         elif t == NPY_USHORT:      f[0] =  72 #"H"
+ *                         elif t == NPY_INT:         f[0] = 105 #"i"
+ *                         elif t == NPY_UINT:        f[0] =  73 #"I"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_LONG:        f[0] = 108 #"l"
+ *                         elif t == NPY_ULONG:       f[0] = 76  #"L"
+ */
+          (__pyx_v_f[0]) = 73;
+          break;
+          case NPY_LONG:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":167
+ *                         elif t == NPY_INT:         f[0] = 105 #"i"
+ *                         elif t == NPY_UINT:        f[0] =  73 #"I"
+ *                         elif t == NPY_LONG:        f[0] = 108 #"l"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_ULONG:       f[0] = 76  #"L"
+ *                         elif t == NPY_LONGLONG:    f[0] = 113 #"q"
+ */
+          (__pyx_v_f[0]) = 108;
+          break;
+          case NPY_ULONG:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":168
+ *                         elif t == NPY_UINT:        f[0] =  73 #"I"
+ *                         elif t == NPY_LONG:        f[0] = 108 #"l"
+ *                         elif t == NPY_ULONG:       f[0] = 76  #"L"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_LONGLONG:    f[0] = 113 #"q"
+ *                         elif t == NPY_ULONGLONG:   f[0] = 81  #"Q"
+ */
+          (__pyx_v_f[0]) = 76;
+          break;
+          case NPY_LONGLONG:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":169
+ *                         elif t == NPY_LONG:        f[0] = 108 #"l"
+ *                         elif t == NPY_ULONG:       f[0] = 76  #"L"
+ *                         elif t == NPY_LONGLONG:    f[0] = 113 #"q"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_ULONGLONG:   f[0] = 81  #"Q"
+ *                         elif t == NPY_FLOAT:       f[0] = 102 #"f"
+ */
+          (__pyx_v_f[0]) = 113;
+          break;
+          case NPY_ULONGLONG:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":170
+ *                         elif t == NPY_ULONG:       f[0] = 76  #"L"
+ *                         elif t == NPY_LONGLONG:    f[0] = 113 #"q"
+ *                         elif t == NPY_ULONGLONG:   f[0] = 81  #"Q"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_FLOAT:       f[0] = 102 #"f"
+ *                         elif t == NPY_DOUBLE:      f[0] = 100 #"d"
+ */
+          (__pyx_v_f[0]) = 81;
+          break;
+          case NPY_FLOAT:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":171
+ *                         elif t == NPY_LONGLONG:    f[0] = 113 #"q"
+ *                         elif t == NPY_ULONGLONG:   f[0] = 81  #"Q"
+ *                         elif t == NPY_FLOAT:       f[0] = 102 #"f"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_DOUBLE:      f[0] = 100 #"d"
+ *                         elif t == NPY_LONGDOUBLE:  f[0] = 103 #"g"
+ */
+          (__pyx_v_f[0]) = 102;
+          break;
+          case NPY_DOUBLE:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":172
+ *                         elif t == NPY_ULONGLONG:   f[0] = 81  #"Q"
+ *                         elif t == NPY_FLOAT:       f[0] = 102 #"f"
+ *                         elif t == NPY_DOUBLE:      f[0] = 100 #"d"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_LONGDOUBLE:  f[0] = 103 #"g"
+ *                         elif t == NPY_CFLOAT:      f[0] = 90; f[1] = 102; f += 1
+ */
+          (__pyx_v_f[0]) = 100;
+          break;
+          case NPY_LONGDOUBLE:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":173
+ *                         elif t == NPY_FLOAT:       f[0] = 102 #"f"
+ *                         elif t == NPY_DOUBLE:      f[0] = 100 #"d"
+ *                         elif t == NPY_LONGDOUBLE:  f[0] = 103 #"g"             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_CFLOAT:      f[0] = 90; f[1] = 102; f += 1
+ *                         elif t == NPY_CDOUBLE:     f[0] = 90; f[1] = 100; f += 1
+ */
+          (__pyx_v_f[0]) = 103;
+          break;
+          case NPY_CFLOAT:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":174
+ *                         elif t == NPY_DOUBLE:      f[0] = 100 #"d"
+ *                         elif t == NPY_LONGDOUBLE:  f[0] = 103 #"g"
+ *                         elif t == NPY_CFLOAT:      f[0] = 90; f[1] = 102; f += 1             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_CDOUBLE:     f[0] = 90; f[1] = 100; f += 1
+ *                         elif t == NPY_CLONGDOUBLE: f[0] = 90; f[1] = 103; f += 1
+ */
+          (__pyx_v_f[0]) = 90;
+          (__pyx_v_f[1]) = 102;
+          __pyx_v_f += 1;
+          break;
+          case NPY_CDOUBLE:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":175
+ *                         elif t == NPY_LONGDOUBLE:  f[0] = 103 #"g"
+ *                         elif t == NPY_CFLOAT:      f[0] = 90; f[1] = 102; f += 1
+ *                         elif t == NPY_CDOUBLE:     f[0] = 90; f[1] = 100; f += 1             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_CLONGDOUBLE: f[0] = 90; f[1] = 103; f += 1
+ *                         elif t == NPY_OBJECT:      f[0] = 79 #"O"
+ */
+          (__pyx_v_f[0]) = 90;
+          (__pyx_v_f[1]) = 100;
+          __pyx_v_f += 1;
+          break;
+          case NPY_CLONGDOUBLE:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":176
+ *                         elif t == NPY_CFLOAT:      f[0] = 90; f[1] = 102; f += 1
+ *                         elif t == NPY_CDOUBLE:     f[0] = 90; f[1] = 100; f += 1
+ *                         elif t == NPY_CLONGDOUBLE: f[0] = 90; f[1] = 103; f += 1             # <<<<<<<<<<<<<<
+ *                         elif t == NPY_OBJECT:      f[0] = 79 #"O"
+ *                         else:
+ */
+          (__pyx_v_f[0]) = 90;
+          (__pyx_v_f[1]) = 103;
+          __pyx_v_f += 1;
+          break;
+          case NPY_OBJECT:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":177
+ *                         elif t == NPY_CDOUBLE:     f[0] = 90; f[1] = 100; f += 1
+ *                         elif t == NPY_CLONGDOUBLE: f[0] = 90; f[1] = 103; f += 1
+ *                         elif t == NPY_OBJECT:      f[0] = 79 #"O"             # <<<<<<<<<<<<<<
+ *                         else:
+ *                             raise ValueError("unknown dtype code in numpy.pxd (%d)" % t)
+ */
+          (__pyx_v_f[0]) = 79;
+          break;
+          default:
+
+          /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":179
+ *                         elif t == NPY_OBJECT:      f[0] = 79 #"O"
+ *                         else:
+ *                             raise ValueError("unknown dtype code in numpy.pxd (%d)" % t)             # <<<<<<<<<<<<<<
+ *                         f += 1
+ *                     else:
+ */
+          __pyx_2 = PyInt_FromLong(__pyx_v_t); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = PyNumber_Remainder(__pyx_kp_22, __pyx_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          Py_DECREF(__pyx_2); __pyx_2 = 0;
+          __pyx_3 = PyTuple_New(1); if (unlikely(!__pyx_3)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          PyTuple_SET_ITEM(__pyx_3, 0, __pyx_t_1);
+          __pyx_t_1 = 0;
+          __pyx_5 = PyObject_Call(__pyx_builtin_ValueError, ((PyObject *)__pyx_3), NULL); if (unlikely(!__pyx_5)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          Py_DECREF(((PyObject *)__pyx_3)); __pyx_3 = 0;
+          __Pyx_Raise(__pyx_5, 0, 0);
+          Py_DECREF(__pyx_5); __pyx_5 = 0;
+          {__pyx_filename = __pyx_f[1]; __pyx_lineno = 179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          break;
+        }
+
+        /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":180
+ *                         else:
+ *                             raise ValueError("unknown dtype code in numpy.pxd (%d)" % t)
+ *                         f += 1             # <<<<<<<<<<<<<<
+ *                     else:
+ *                         f[0] = 84 #"T"
+ */
+        __pyx_v_f += 1;
+        goto __pyx_L24;
+      }
+      /*else*/ {
+
+        /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":182
+ *                         f += 1
+ *                     else:
+ *                         f[0] = 84 #"T"             # <<<<<<<<<<<<<<
+ *                         f[1] = 123 #"{"
+ *                         f += 2
+ */
+        (__pyx_v_f[0]) = 84;
+
+        /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":183
+ *                     else:
+ *                         f[0] = 84 #"T"
+ *                         f[1] = 123 #"{"             # <<<<<<<<<<<<<<
+ *                         f += 2
+ *                         stack.append(iter(descr.fields.iteritems()))
+ */
+        (__pyx_v_f[1]) = 123;
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+        /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":184
+ *                         f[0] = 84 #"T"
+ *                         f[1] = 123 #"{"
+ *                         f += 2             # <<<<<<<<<<<<<<
+ *                         stack.append(iter(descr.fields.iteritems()))
+ * 
+ */
+        __pyx_v_f += 2;
+
+        /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":185
+ *                         f[1] = 123 #"{"
+ *                         f += 2
+ *                         stack.append(iter(descr.fields.iteritems()))             # <<<<<<<<<<<<<<
+ * 
+ *         def __releasebuffer__(ndarray self, Py_buffer* info):
+ */
+        __pyx_7 = PyObject_GetAttr(__pyx_v_descr->fields, __pyx_kp_iteritems); if (unlikely(!__pyx_7)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_6 = PyObject_Call(__pyx_7, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_6)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        Py_DECREF(__pyx_7); __pyx_7 = 0;
+        __pyx_2 = PyObject_GetIter(__pyx_6); if (unlikely(!__pyx_2)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        Py_DECREF(__pyx_6); __pyx_6 = 0;
+        __pyx_4 = PyList_Append(((PyObject *)__pyx_v_stack), __pyx_2); if (unlikely(__pyx_4 == -1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 185; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        Py_DECREF(__pyx_2); __pyx_2 = 0;
+      }
+      __pyx_L24:;
+    }
+  }
+  __pyx_L12:;
+
+  __pyx_r = 0;
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  Py_XDECREF(__pyx_2);
+  Py_XDECREF(__pyx_3);
+  Py_XDECREF(__pyx_5);
+  Py_XDECREF(__pyx_6);
+  Py_XDECREF(__pyx_7);
+  __Pyx_AddTraceback("numpy.ndarray.__getbuffer__");
+  __pyx_r = -1;
+  Py_DECREF(__pyx_v_info->obj); __pyx_v_info->obj = NULL;
+  goto __pyx_L2;
+  __pyx_L0:;
+  if (__pyx_v_info->obj == Py_None) { Py_DECREF(Py_None); __pyx_v_info->obj = NULL; }
+  __pyx_L2:;
+  Py_XDECREF(__pyx_v_descr);
+  Py_DECREF(__pyx_v_stack);
+  Py_DECREF(__pyx_v_iterator);
+  return __pyx_r;
+}
+
+/* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":187
+ *                         stack.append(iter(descr.fields.iteritems()))
+ * 
+ *         def __releasebuffer__(ndarray self, Py_buffer* info):             # <<<<<<<<<<<<<<
+ *             if PyArray_HASFIELDS(self):
+ *                 stdlib.free(info.format)
+ */
+
+static void __pyx_pf_5numpy_7ndarray___releasebuffer__(PyObject *__pyx_v_self, Py_buffer *__pyx_v_info); /*proto*/
+static void __pyx_pf_5numpy_7ndarray___releasebuffer__(PyObject *__pyx_v_self, Py_buffer *__pyx_v_info) {
+  int __pyx_1;
+  int __pyx_2;
+
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":188
+ * 
+ *         def __releasebuffer__(ndarray self, Py_buffer* info):
+ *             if PyArray_HASFIELDS(self):             # <<<<<<<<<<<<<<
+ *                 stdlib.free(info.format)
+ *             if sizeof(npy_intp) != sizeof(Py_ssize_t):
+ */
+  __pyx_1 = PyArray_HASFIELDS(((PyArrayObject *)__pyx_v_self));
+  if (__pyx_1) {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":189
+ *         def __releasebuffer__(ndarray self, Py_buffer* info):
+ *             if PyArray_HASFIELDS(self):
+ *                 stdlib.free(info.format)             # <<<<<<<<<<<<<<
+ *             if sizeof(npy_intp) != sizeof(Py_ssize_t):
+ *                 stdlib.free(info.strides)
+ */
+    free(__pyx_v_info->format);
+    goto __pyx_L5;
+  }
+  __pyx_L5:;
+
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":190
+ *             if PyArray_HASFIELDS(self):
+ *                 stdlib.free(info.format)
+ *             if sizeof(npy_intp) != sizeof(Py_ssize_t):             # <<<<<<<<<<<<<<
+ *                 stdlib.free(info.strides)
+ *                 # info.shape was stored after info.strides in the same block
+ */
+  __pyx_2 = ((sizeof(npy_intp)) != (sizeof(Py_ssize_t)));
+  if (__pyx_2) {
+
+    /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":191
+ *                 stdlib.free(info.format)
+ *             if sizeof(npy_intp) != sizeof(Py_ssize_t):
+ *                 stdlib.free(info.strides)             # <<<<<<<<<<<<<<
+ *                 # info.shape was stored after info.strides in the same block
+ * 
+ */
+    free(__pyx_v_info->strides);
+    goto __pyx_L6;
+  }
+  __pyx_L6:;
+
+}
+
+static PyObject *__pyx_tp_new_2yt_5lagos_16DepthFirstOctree_position(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  if (__pyx_pf_2yt_5lagos_16DepthFirstOctree_8position___cinit__(o, __pyx_empty_tuple, NULL) < 0) {
+    Py_DECREF(o); o = 0;
+  }
+  return o;
+}
+
+static void __pyx_tp_dealloc_2yt_5lagos_16DepthFirstOctree_position(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
@@ -2659,10 +3932,10 @@
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getcharbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_getbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_releasebuffer*/
   #endif
 };
@@ -2687,7 +3960,7 @@
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   &__pyx_tp_as_buffer_position, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_NEWBUFFER, /*tp_flags*/
   0, /*tp_doc*/
   0, /*tp_traverse*/
   0, /*tp_clear*/
@@ -2883,10 +4156,10 @@
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getcharbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_getbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_releasebuffer*/
   #endif
 };
@@ -2911,7 +4184,7 @@
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   &__pyx_tp_as_buffer_OctreeGrid, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
   __pyx_tp_traverse_2yt_5lagos_16DepthFirstOctree_OctreeGrid, /*tp_traverse*/
   __pyx_tp_clear_2yt_5lagos_16DepthFirstOctree_OctreeGrid, /*tp_clear*/
@@ -3078,10 +4351,10 @@
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getcharbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_getbuffer*/
   #endif
-  #if (PY_MAJOR_VERSION >= 3) || (Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+  #if PY_VERSION_HEX >= 0x02060000
   0, /*bf_releasebuffer*/
   #endif
 };
@@ -3106,7 +4379,7 @@
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   &__pyx_tp_as_buffer_OctreeGridList, /*tp_as_buffer*/
-  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
   __pyx_tp_traverse_2yt_5lagos_16DepthFirstOctree_OctreeGridList, /*tp_traverse*/
   __pyx_tp_clear_2yt_5lagos_16DepthFirstOctree_OctreeGridList, /*tp_clear*/
@@ -3157,22 +4430,53 @@
 #endif
 
 static __Pyx_StringTabEntry __pyx_string_tab[] = {
-  {&__pyx_kp___cinit__, __pyx_k___cinit__, sizeof(__pyx_k___cinit__), 0, 1, 1},
-  {&__pyx_kp___getitem__, __pyx_k___getitem__, sizeof(__pyx_k___getitem__), 0, 1, 1},
+  {&__pyx_kp___cinit__, __pyx_k___cinit__, sizeof(__pyx_k___cinit__), 1, 1, 1},
+  {&__pyx_kp___getitem__, __pyx_k___getitem__, sizeof(__pyx_k___getitem__), 1, 1, 1},
+  {&__pyx_kp_child_indices, __pyx_k_child_indices, sizeof(__pyx_k_child_indices), 1, 1, 1},
+  {&__pyx_kp_fields, __pyx_k_fields, sizeof(__pyx_k_fields), 1, 1, 1},
+  {&__pyx_kp_left_edges, __pyx_k_left_edges, sizeof(__pyx_k_left_edges), 1, 1, 1},
+  {&__pyx_kp_dimensions, __pyx_k_dimensions, sizeof(__pyx_k_dimensions), 1, 1, 1},
+  {&__pyx_kp_dx, __pyx_k_dx, sizeof(__pyx_k_dx), 1, 1, 1},
+  {&__pyx_kp_level, __pyx_k_level, sizeof(__pyx_k_level), 1, 1, 1},
+  {&__pyx_kp_grids, __pyx_k_grids, sizeof(__pyx_k_grids), 1, 1, 1},
+  {&__pyx_kp_item, __pyx_k_item, sizeof(__pyx_k_item), 1, 1, 1},
+  {&__pyx_kp_i_i, __pyx_k_i_i, sizeof(__pyx_k_i_i), 1, 1, 1},
+  {&__pyx_kp_j_i, __pyx_k_j_i, sizeof(__pyx_k_j_i), 1, 1, 1},
+  {&__pyx_kp_k_i, __pyx_k_k_i, sizeof(__pyx_k_k_i), 1, 1, 1},
+  {&__pyx_kp_i_f, __pyx_k_i_f, sizeof(__pyx_k_i_f), 1, 1, 1},
+  {&__pyx_kp_j_f, __pyx_k_j_f, sizeof(__pyx_k_j_f), 1, 1, 1},
+  {&__pyx_kp_k_f, __pyx_k_k_f, sizeof(__pyx_k_k_f), 1, 1, 1},
+  {&__pyx_kp_curpos, __pyx_k_curpos, sizeof(__pyx_k_curpos), 1, 1, 1},
+  {&__pyx_kp_gi, __pyx_k_gi, sizeof(__pyx_k_gi), 1, 1, 1},
+  {&__pyx_kp_output, __pyx_k_output, sizeof(__pyx_k_output), 1, 1, 1},
+  {&__pyx_kp_refined, __pyx_k_refined, sizeof(__pyx_k_refined), 1, 1, 1},
+  {&__pyx_kp_genealogy, __pyx_k_genealogy, sizeof(__pyx_k_genealogy), 1, 1, 1},
+  {&__pyx_kp_corners, __pyx_k_corners, sizeof(__pyx_k_corners), 1, 1, 1},
   {&__pyx_kp_numpy, __pyx_k_numpy, sizeof(__pyx_k_numpy), 1, 1, 1},
   {&__pyx_kp_np, __pyx_k_np, sizeof(__pyx_k_np), 0, 1, 1},
-  {&__pyx_kp_17, __pyx_k_17, sizeof(__pyx_k_17), 0, 1, 1},
-  {&__pyx_kp_18, __pyx_k_18, sizeof(__pyx_k_18), 0, 1, 1},
-  {&__pyx_kp___getbuffer__, __pyx_k___getbuffer__, sizeof(__pyx_k___getbuffer__), 0, 1, 1},
-  {&__pyx_kp_RuntimeError, __pyx_k_RuntimeError, sizeof(__pyx_k_RuntimeError), 1, 1, 1},
+  {&__pyx_kp_23, __pyx_k_23, sizeof(__pyx_k_23), 1, 1, 1},
+  {&__pyx_kp_24, __pyx_k_24, sizeof(__pyx_k_24), 1, 1, 1},
+  {&__pyx_kp___getbuffer__, __pyx_k___getbuffer__, sizeof(__pyx_k___getbuffer__), 1, 1, 1},
+  {&__pyx_kp___releasebuffer__, __pyx_k___releasebuffer__, sizeof(__pyx_k___releasebuffer__), 1, 1, 1},
+  {&__pyx_kp_info, __pyx_k_info, sizeof(__pyx_k_info), 1, 1, 1},
+  {&__pyx_kp_flags, __pyx_k_flags, sizeof(__pyx_k_flags), 1, 1, 1},
   {&__pyx_kp_ValueError, __pyx_k_ValueError, sizeof(__pyx_k_ValueError), 1, 1, 1},
+  {&__pyx_kp_iteritems, __pyx_k_iteritems, sizeof(__pyx_k_iteritems), 1, 1, 1},
+  {&__pyx_kp_next, __pyx_k_next, sizeof(__pyx_k_next), 1, 1, 1},
+  {&__pyx_kp_StopIteration, __pyx_k_StopIteration, sizeof(__pyx_k_StopIteration), 1, 1, 1},
+  {&__pyx_kp_pop, __pyx_k_pop, sizeof(__pyx_k_pop), 1, 1, 1},
+  {&__pyx_kp_RuntimeError, __pyx_k_RuntimeError, sizeof(__pyx_k_RuntimeError), 1, 1, 1},
   {&__pyx_kp_1, __pyx_k_1, sizeof(__pyx_k_1), 0, 0, 0},
-  {&__pyx_kp_16, __pyx_k_16, sizeof(__pyx_k_16), 0, 0, 0},
+  {&__pyx_kp_2, __pyx_k_2, sizeof(__pyx_k_2), 0, 0, 0},
+  {&__pyx_kp_20, __pyx_k_20, sizeof(__pyx_k_20), 0, 0, 0},
+  {&__pyx_kp_21, __pyx_k_21, sizeof(__pyx_k_21), 0, 0, 0},
+  {&__pyx_kp_22, __pyx_k_22, sizeof(__pyx_k_22), 0, 0, 0},
   {0, 0, 0, 0, 0, 0}
 };
 static int __Pyx_InitCachedBuiltins(void) {
-  __pyx_builtin_RuntimeError = __Pyx_GetName(__pyx_b, __pyx_kp_RuntimeError); if (!__pyx_builtin_RuntimeError) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_ValueError = __Pyx_GetName(__pyx_b, __pyx_kp_ValueError); if (!__pyx_builtin_ValueError) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 73; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_ValueError = __Pyx_GetName(__pyx_b, __pyx_kp_ValueError); if (!__pyx_builtin_ValueError) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_StopIteration = __Pyx_GetName(__pyx_b, __pyx_kp_StopIteration); if (!__pyx_builtin_StopIteration) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_RuntimeError = __Pyx_GetName(__pyx_b, __pyx_kp_RuntimeError); if (!__pyx_builtin_RuntimeError) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 158; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -3197,7 +4501,7 @@
 {
   PyObject *__pyx_1 = 0;
   __pyx_empty_tuple = PyTuple_New(0); if (unlikely(!__pyx_empty_tuple)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  /*--- Libary function declarations ---*/
+  /*--- Library function declarations ---*/
   __pyx_init_filenames();
   /*--- Initialize various global constants etc. ---*/
   if (unlikely(__Pyx_InitGlobals() < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -3230,7 +4534,8 @@
   if (PyObject_SetAttrString(__pyx_m, "OctreeGridList", (PyObject *)&__pyx_type_2yt_5lagos_16DepthFirstOctree_OctreeGridList) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_2yt_5lagos_16DepthFirstOctree_OctreeGridList = &__pyx_type_2yt_5lagos_16DepthFirstOctree_OctreeGridList;
   /*--- Type import code ---*/
-  __pyx_ptype_5numpy_ndarray = __Pyx_ImportType("numpy", "ndarray", sizeof(PyArrayObject)); if (unlikely(!__pyx_ptype_5numpy_ndarray)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_5numpy_dtype = __Pyx_ImportType("numpy", "dtype", sizeof(PyArray_Descr)); if (unlikely(!__pyx_ptype_5numpy_dtype)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 30; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_5numpy_ndarray = __Pyx_ImportType("numpy", "ndarray", sizeof(PyArrayObject)); if (unlikely(!__pyx_ptype_5numpy_ndarray)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   /*--- Function import code ---*/
   /*--- Execution code ---*/
 
@@ -3245,12 +4550,11 @@
   if (PyObject_SetAttr(__pyx_m, __pyx_kp_np, __pyx_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   Py_DECREF(__pyx_1); __pyx_1 = 0;
 
-  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.9.8.1.1-py2.5-macosx-10.3-ppc.egg/Cython/Includes/numpy.pxd":36
- *         # experimental exception made for __getbuffer__ and __releasebuffer__
- *         # -- the details of this may change.
- *         def __getbuffer__(ndarray self, Py_buffer* info, int flags):             # <<<<<<<<<<<<<<
- *             # This implementation of getbuffer is geared towards Cython
- *             # requirements, and does not yet fullfill the PEP (specifically,
+  /* "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/Cython-0.10.3-py2.5-macosx-10.3-ppc.egg/Cython/Includes/stdlib.pxd":2
+ * 
+ * cdef extern from "stdlib.h":             # <<<<<<<<<<<<<<
+ *     ctypedef unsigned long size_t
+ *     void free(void *ptr)
  */
   #if PY_MAJOR_VERSION < 3
   return;
@@ -3276,14 +4580,174 @@
   __pyx_f = __pyx_filenames;
 }
 
-static INLINE void __Pyx_SafeReleaseBuffer(PyObject* obj, Py_buffer* info) {
+static void __Pyx_RaiseArgtupleInvalid(
+    const char* func_name,
+    int exact,
+    Py_ssize_t num_min,
+    Py_ssize_t num_max,
+    Py_ssize_t num_found)
+{
+    Py_ssize_t num_expected;
+    const char *number, *more_or_less;
+
+    if (num_found < num_min) {
+        num_expected = num_min;
+        more_or_less = "at least";
+    } else {
+        num_expected = num_max;
+        more_or_less = "at most";
+    }
+    if (exact) {
+        more_or_less = "exactly";
+    }
+    number = (num_expected == 1) ? "" : "s";
+    PyErr_Format(PyExc_TypeError,
+        #if PY_VERSION_HEX < 0x02050000
+            "%s() takes %s %d positional argument%s (%d given)",
+        #else
+            "%s() takes %s %zd positional argument%s (%zd given)",
+        #endif
+        func_name, more_or_less, num_expected, number, num_found);
+}
+
+static INLINE int __Pyx_CheckKeywordStrings(
+    PyObject *kwdict,
+    const char* function_name,
+    int kw_allowed)
+{
+    PyObject* key = 0;
+    Py_ssize_t pos = 0;
+    while (PyDict_Next(kwdict, &pos, &key, 0)) {
+        #if PY_MAJOR_VERSION < 3
+        if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key)))
+        #else
+        if (unlikely(!PyUnicode_CheckExact(key)) && unlikely(!PyUnicode_Check(key)))
+        #endif
+            goto invalid_keyword_type;
+    }
+    if ((!kw_allowed) && unlikely(key))
+        goto invalid_keyword;
+    return 1;
+invalid_keyword_type:
+    PyErr_Format(PyExc_TypeError,
+        "%s() keywords must be strings", function_name);
+    return 0;
+invalid_keyword:
+    PyErr_Format(PyExc_TypeError,
+    #if PY_MAJOR_VERSION < 3
+        "%s() got an unexpected keyword argument '%s'",
+        function_name, PyString_AsString(key));
+    #else
+        "%s() got an unexpected keyword argument '%U'",
+        function_name, key);
+    #endif
+    return 0;
+}
+
+static void __Pyx_RaiseDoubleKeywordsError(
+    const char* func_name,
+    PyObject* kw_name)
+{
+    PyErr_Format(PyExc_TypeError,
+        #if PY_MAJOR_VERSION >= 3
+        "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
+        #else
+        "%s() got multiple values for keyword argument '%s'", func_name,
+        PyString_AS_STRING(kw_name));
+        #endif
+}
+
+static int __Pyx_ParseOptionalKeywords(
+    PyObject *kwds,
+    PyObject **argnames[],
+    PyObject *kwds2,
+    PyObject *values[],
+    Py_ssize_t num_pos_args,
+    const char* function_name)
+{
+    PyObject *key = 0, *value = 0;
+    Py_ssize_t pos = 0;
+    PyObject*** name;
+    PyObject*** first_kw_arg = argnames + num_pos_args;
+
+    while (PyDict_Next(kwds, &pos, &key, &value)) {
+        #if PY_MAJOR_VERSION < 3
+        if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key))) {
+        #else
+        if (unlikely(!PyUnicode_CheckExact(key)) && unlikely(!PyUnicode_Check(key))) {
+        #endif
+            goto invalid_keyword_type;
+        } else {
+            name = argnames;
+            while (*name && (**name != key)) name++;
+            if (*name) {
+                if (name < first_kw_arg) goto arg_passed_twice;
+                values[name-argnames] = value;
+            } else {
+                for (name = first_kw_arg; *name; name++) {
+                    #if PY_MAJOR_VERSION >= 3
+                    if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
+                        PyUnicode_Compare(**name, key) == 0) break;
+                    #else
+                    if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
+                        strcmp(PyString_AS_STRING(**name),
+                               PyString_AS_STRING(key)) == 0) break;
+                    #endif
+                }
+                if (*name) {
+                    values[name-argnames] = value;
+                } else {
+                    /* unexpected keyword found */
+                    for (name=argnames; name != first_kw_arg; name++) {
+                        if (**name == key) goto arg_passed_twice;
+                        #if PY_MAJOR_VERSION >= 3
+                        if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
+                            PyUnicode_Compare(**name, key) == 0) goto arg_passed_twice;
+                        #else
+                        if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
+                            strcmp(PyString_AS_STRING(**name),
+                                   PyString_AS_STRING(key)) == 0) goto arg_passed_twice;
+                        #endif
+                    }
+                    if (kwds2) {
+                        if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
+                    } else {
+                        goto invalid_keyword;
+                    }
+                }
+            }
+        }
+    }
+    return 0;
+arg_passed_twice:
+    __Pyx_RaiseDoubleKeywordsError(function_name, **name);
+    goto bad;
+invalid_keyword_type:
+    PyErr_Format(PyExc_TypeError,
+        "%s() keywords must be strings", function_name);
+    goto bad;
+invalid_keyword:
+    PyErr_Format(PyExc_TypeError,
+    #if PY_MAJOR_VERSION < 3
+        "%s() got an unexpected keyword argument '%s'",
+        function_name, PyString_AsString(key));
+    #else
+        "%s() got an unexpected keyword argument '%U'",
+        function_name, key);
+    #endif
+bad:
+    return -1;
+}
+
+static INLINE void __Pyx_SafeReleaseBuffer(Py_buffer* info) {
   if (info->buf == NULL) return;
   if (info->suboffsets == __Pyx_minusones) info->suboffsets = NULL;
-  __Pyx_ReleaseBuffer(obj, info);
+  __Pyx_ReleaseBuffer(info);
 }
 
 static INLINE void __Pyx_ZeroBuffer(Py_buffer* buf) {
   buf->buf = NULL;
+  buf->obj = NULL;
   buf->strides = __Pyx_zeros;
   buf->shape = __Pyx_zeros;
   buf->suboffsets = __Pyx_minusones;
@@ -3292,66 +4756,79 @@
 static INLINE const char* __Pyx_ConsumeWhitespace(const char* ts) {
   while (1) {
     switch (*ts) {
+      case '@':
       case 10:
       case 13:
       case ' ':
         ++ts;
+        break;
+      case '=':
+      case '<':
+      case '>':
+      case '!':
+        PyErr_SetString(PyExc_ValueError, "Buffer acquisition error: Only native byte order, size and alignment supported.");
+        return NULL;               
       default:
         return ts;
     }
   }
 }
 
-static INLINE const char* __Pyx_BufferTypestringCheckEndian(const char* ts) {
-  int num = 1;
-  int little_endian = ((char*)&num)[0];
-  int ok = 1;
-  switch (*ts) {
-    case '@':
-    case '=':
-      ++ts; break;
-    case '<':
-      if (little_endian) ++ts;
-      else ok = 0;
-      break;
-    case '>':
-    case '!':
-      if (!little_endian) ++ts;
-      else ok = 0;
-      break;
-  }
-  if (!ok) {
-    PyErr_Format(PyExc_ValueError, "Buffer has wrong endianness (rejecting on '%s')", ts);
-    return NULL;
-  }
-  return ts;
-}
-
 static void __Pyx_BufferNdimError(Py_buffer* buffer, int expected_ndim) {
   PyErr_Format(PyExc_ValueError,
                "Buffer has wrong number of dimensions (expected %d, got %d)",
                expected_ndim, buffer->ndim);
 }
 
-
-static const char* __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_int32_t(const char* ts) {
-  int ok;
-  if (*ts == '1') ++ts;
+static const char* __Pyx_DescribeTokenInFormatString(const char* ts) {
   switch (*ts) {
-    case 'b': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(char) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
-    case 'h': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(short) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
-    case 'i': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(int) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
-    case 'l': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(long) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
-    case 'q': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(long long) && (__pyx_t_5numpy_int32_t)-1 < 0); break;  default: ok = 0;
+    case 'b': return "char";
+    case 'B': return "unsigned char";
+    case 'h': return "short";
+    case 'H': return "unsigned short";
+    case 'i': return "int";
+    case 'I': return "unsigned int";
+    case 'l': return "long";
+    case 'L': return "unsigned long";
+    case 'q': return "long long";
+    case 'Q': return "unsigned long long";
+    case 'f': return "float";
+    case 'd': return "double";
+    case 'g': return "long double";
+    case 'Z': switch (*(ts+1)) {
+        case 'f': return "complex float";
+        case 'd': return "complex double";
+        case 'g': return "complex long double";
+        default: return "unparseable format string";
+    }
+    case 'T': return "a struct";
+    case 'O': return "Python object";
+    case 'P': return "a pointer";
+    default: return "unparseable format string";
   }
-  if (!ok) {
-      PyErr_Format(PyExc_ValueError, "Buffer datatype mismatch (rejecting on '%s')", ts);
-      return NULL;
-  } else return ts + 1;
-  
 }
 
-static int __Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t(PyObject* obj, Py_buffer* buf, int flags, int nd) {
+static const char* __Pyx_CheckTypestring_nn___pyx_t_5numpy_int32_t(const char* ts) {
+    int ok;
+    ts = __Pyx_ConsumeWhitespace(ts); if (!ts) return NULL;
+    if (*ts == '1') ++ts;
+    switch (*ts) {
+      case 'b': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(char) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
+      case 'h': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(short) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
+      case 'i': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(int) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
+      case 'l': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(long) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
+      case 'q': ok = (sizeof(__pyx_t_5numpy_int32_t) == sizeof(long long) && (__pyx_t_5numpy_int32_t)-1 < 0); break;
+      default: ok = 0;
+    }
+    if (!(ok)) {
+      PyErr_Format(PyExc_ValueError, "Buffer dtype mismatch (expected numpy.int32_t, got %s)", __Pyx_DescribeTokenInFormatString(ts));
+      return NULL;
+    }
+    ++ts;
+    return ts;
+  }
+  
+static int __Pyx_GetBuffer_nn___pyx_t_5numpy_int32_t(PyObject* obj, Py_buffer* buf, int flags, int nd, int cast) {
   const char* ts;
   if (obj == Py_None) {
     __Pyx_ZeroBuffer(buf);
@@ -3363,41 +4840,51 @@
     __Pyx_BufferNdimError(buf, nd);
     goto fail;
   }
-  ts = buf->format;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  ts = __Pyx_BufferTypestringCheckEndian(ts);
-  if (!ts) goto fail;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  ts = __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_int32_t(ts);
-  if (!ts) goto fail;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  if (*ts != 0) {
-    PyErr_Format(PyExc_ValueError,
-      "Expected non-struct buffer data type (expected end, got '%s')", ts);
-    goto fail;
+  if (!cast) {
+    ts = buf->format;
+    ts = __Pyx_ConsumeWhitespace(ts);
+    if (!ts) goto fail;
+    ts = __Pyx_CheckTypestring_nn___pyx_t_5numpy_int32_t(ts);
+    if (!ts) goto fail;
+    ts = __Pyx_ConsumeWhitespace(ts);
+    if (!ts) goto fail;
+    if (*ts != 0) {
+      PyErr_Format(PyExc_ValueError,
+        "Buffer dtype mismatch (expected end, got %s)",
+        __Pyx_DescribeTokenInFormatString(ts));
+      goto fail;
+    }
+  } else {
+    if (buf->itemsize != sizeof(__pyx_t_5numpy_int32_t)) {
+      PyErr_SetString(PyExc_ValueError,
+        "Attempted cast of buffer to datatype of different size.");
+      goto fail;
+    }
   }
   if (buf->suboffsets == NULL) buf->suboffsets = __Pyx_minusones;
   return 0;
 fail:;
   __Pyx_ZeroBuffer(buf);
   return -1;
-}
-static const char* __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_float64_t(const char* ts) {
-  int ok;
-  if (*ts == '1') ++ts;
-  switch (*ts) {
-    case 'f': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(float) && (__pyx_t_5numpy_float64_t)-1 < 0); break;
-    case 'd': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(double) && (__pyx_t_5numpy_float64_t)-1 < 0); break;
-    case 'g': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(long double) && (__pyx_t_5numpy_float64_t)-1 < 0); break;  default: ok = 0;
-  }
-  if (!ok) {
-      PyErr_Format(PyExc_ValueError, "Buffer datatype mismatch (rejecting on '%s')", ts);
+}static const char* __Pyx_CheckTypestring_nn___pyx_t_5numpy_float64_t(const char* ts) {
+    int ok;
+    ts = __Pyx_ConsumeWhitespace(ts); if (!ts) return NULL;
+    if (*ts == '1') ++ts;
+    switch (*ts) {
+      case 'f': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(float) && (__pyx_t_5numpy_float64_t)-1 < 0); break;
+      case 'd': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(double) && (__pyx_t_5numpy_float64_t)-1 < 0); break;
+      case 'g': ok = (sizeof(__pyx_t_5numpy_float64_t) == sizeof(long double) && (__pyx_t_5numpy_float64_t)-1 < 0); break;
+      default: ok = 0;
+    }
+    if (!(ok)) {
+      PyErr_Format(PyExc_ValueError, "Buffer dtype mismatch (expected numpy.float64_t, got %s)", __Pyx_DescribeTokenInFormatString(ts));
       return NULL;
-  } else return ts + 1;
+    }
+    ++ts;
+    return ts;
+  }
   
-}
-
-static int __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t(PyObject* obj, Py_buffer* buf, int flags, int nd) {
+static int __Pyx_GetBuffer_nn___pyx_t_5numpy_float64_t(PyObject* obj, Py_buffer* buf, int flags, int nd, int cast) {
   const char* ts;
   if (obj == Py_None) {
     __Pyx_ZeroBuffer(buf);
@@ -3409,18 +4896,26 @@
     __Pyx_BufferNdimError(buf, nd);
     goto fail;
   }
-  ts = buf->format;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  ts = __Pyx_BufferTypestringCheckEndian(ts);
-  if (!ts) goto fail;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  ts = __Pyx_BufferTypestringCheck_item_nn___pyx_t_5numpy_float64_t(ts);
-  if (!ts) goto fail;
-  ts = __Pyx_ConsumeWhitespace(ts);
-  if (*ts != 0) {
-    PyErr_Format(PyExc_ValueError,
-      "Expected non-struct buffer data type (expected end, got '%s')", ts);
-    goto fail;
+  if (!cast) {
+    ts = buf->format;
+    ts = __Pyx_ConsumeWhitespace(ts);
+    if (!ts) goto fail;
+    ts = __Pyx_CheckTypestring_nn___pyx_t_5numpy_float64_t(ts);
+    if (!ts) goto fail;
+    ts = __Pyx_ConsumeWhitespace(ts);
+    if (!ts) goto fail;
+    if (*ts != 0) {
+      PyErr_Format(PyExc_ValueError,
+        "Buffer dtype mismatch (expected end, got %s)",
+        __Pyx_DescribeTokenInFormatString(ts));
+      goto fail;
+    }
+  } else {
+    if (buf->itemsize != sizeof(__pyx_t_5numpy_float64_t)) {
+      PyErr_SetString(PyExc_ValueError,
+        "Attempted cast of buffer to datatype of different size.");
+      goto fail;
+    }
   }
   if (buf->suboffsets == NULL) buf->suboffsets = __Pyx_minusones;
   return 0;
@@ -3428,58 +4923,43 @@
   __Pyx_ZeroBuffer(buf);
   return -1;
 }
+static INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb) {
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    PyThreadState *tstate = PyThreadState_GET();
+
+    tmp_type = tstate->curexc_type;
+    tmp_value = tstate->curexc_value;
+    tmp_tb = tstate->curexc_traceback;
+    tstate->curexc_type = type;
+    tstate->curexc_value = value;
+    tstate->curexc_traceback = tb;
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
+}
+
+static INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb) {
+    PyThreadState *tstate = PyThreadState_GET();
+    *type = tstate->curexc_type;
+    *value = tstate->curexc_value;
+    *tb = tstate->curexc_traceback;
+
+    tstate->curexc_type = 0;
+    tstate->curexc_value = 0;
+    tstate->curexc_traceback = 0;
+}
+
+
+
 static void __Pyx_RaiseBufferFallbackError(void) {
   PyErr_Format(PyExc_ValueError,
      "Buffer acquisition failed on assignment; and then reacquiring the old buffer failed too!");
 }
 
 
-static INLINE void __Pyx_RaiseArgtupleTooLong(
-    Py_ssize_t num_expected,
-    Py_ssize_t num_found)
+static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
+    const char *name, int exact)
 {
-    const char* error_message =
-    #if PY_VERSION_HEX < 0x02050000
-        "function takes at most %d positional arguments (%d given)";
-    #else
-        "function takes at most %zd positional arguments (%zd given)";
-    #endif
-    PyErr_Format(PyExc_TypeError, error_message, num_expected, num_found);
-}
-
-static int __Pyx_CheckKeywordStrings(
-    PyObject *kwdict,
-    const char* function_name,
-    int kw_allowed)
-{
-    PyObject* key = 0;
-    Py_ssize_t pos = 0;
-    while (PyDict_Next(kwdict, &pos, &key, 0)) {
-        #if PY_MAJOR_VERSION < 3
-        if (unlikely(!PyString_Check(key))) {
-        #else
-        if (unlikely(!PyUnicode_Check(key))) {
-        #endif
-            PyErr_Format(PyExc_TypeError,
-                         "%s() keywords must be strings", function_name);
-            return 0;
-        }
-    }
-    if (unlikely(!kw_allowed) && unlikely(key)) {
-        PyErr_Format(PyExc_TypeError,
-        #if PY_MAJOR_VERSION < 3
-                     "'%s' is an invalid keyword argument for this function",
-                     PyString_AsString(key));
-        #else
-                     "'%U' is an invalid keyword argument for this function",
-                     key);
-        #endif
-        return 0;
-    }
-    return 1;
-}
-
-static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed, char *name, int exact) {
     if (!type) {
         PyErr_Format(PyExc_SystemError, "Missing type object");
         return 0;
@@ -3497,8 +4977,12 @@
     return 0;
 }
 
-#if (PY_MAJOR_VERSION < 3) && !(Py_TPFLAGS_DEFAULT & Py_TPFLAGS_HAVE_NEWBUFFER)
+#if PY_MAJOR_VERSION < 3
 static int __Pyx_GetBuffer(PyObject *obj, Py_buffer *view, int flags) {
+  #if PY_VERSION_HEX >= 0x02060000
+  if (Py_TYPE(obj)->tp_flags & Py_TPFLAGS_HAVE_NEWBUFFER)
+      return PyObject_GetBuffer(obj, view, flags);
+  #endif
   if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) return __pyx_pf_5numpy_7ndarray___getbuffer__(obj, view, flags);
   else {
   PyErr_Format(PyExc_TypeError, "'%100s' does not have the buffer interface", Py_TYPE(obj)->tp_name);
@@ -3506,8 +4990,13 @@
     }
 }
 
-static void __Pyx_ReleaseBuffer(PyObject *obj, Py_buffer *view) {
-
+static void __Pyx_ReleaseBuffer(Py_buffer *view) {
+  PyObject* obj = view->obj;
+  if (obj) {
+if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) __pyx_pf_5numpy_7ndarray___releasebuffer__(obj, view);
+    Py_DECREF(obj);
+    view->obj = NULL;
+  }
 }
 
 #endif
@@ -3545,7 +5034,6 @@
     return module;
 }
 
-
 static int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
     if (!type) {
         PyErr_Format(PyExc_SystemError, "Missing type object");
@@ -3641,6 +5129,30 @@
 }
 #endif
 
+static INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
+    PyThreadState *tstate = PyThreadState_GET();
+    *type = tstate->exc_type;
+    *value = tstate->exc_value;
+    *tb = tstate->exc_traceback;
+    Py_XINCREF(*type);
+    Py_XINCREF(*value);
+    Py_XINCREF(*tb);
+}
+
+static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    PyThreadState *tstate = PyThreadState_GET();
+    tmp_type = tstate->exc_type;
+    tmp_value = tstate->exc_value;
+    tmp_tb = tstate->exc_traceback;
+    tstate->exc_type = type;
+    tstate->exc_value = value;
+    tstate->exc_traceback = tb;
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
+}
+
 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
     Py_XINCREF(type);
     Py_XINCREF(value);
@@ -3696,7 +5208,7 @@
             }
         #endif
     }
-    PyErr_Restore(type, value, tb);
+    __Pyx_ErrRestore(type, value, tb);
     return;
 raise_error:
     Py_XDECREF(value);
@@ -3705,27 +5217,60 @@
     return;
 }
 
+static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    PyThreadState *tstate = PyThreadState_GET();
+    __Pyx_ErrFetch(type, value, tb);
+    PyErr_NormalizeException(type, value, tb);
+    if (PyErr_Occurred())
+        goto bad;
+    Py_INCREF(*type);
+    Py_INCREF(*value);
+    Py_INCREF(*tb);
+    tmp_type = tstate->exc_type;
+    tmp_value = tstate->exc_value;
+    tmp_tb = tstate->exc_traceback;
+    tstate->exc_type = *type;
+    tstate->exc_value = *value;
+    tstate->exc_traceback = *tb;
+    /* Make sure tstate is in a consistent state when we XDECREF
+    these objects (XDECREF may run arbitrary code). */
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
+    return 0;
+bad:
+    Py_XDECREF(*type);
+    Py_XDECREF(*value);
+    Py_XDECREF(*tb);
+    return -1;
+}
+
+
 #ifndef __PYX_HAVE_RT_ImportType
 #define __PYX_HAVE_RT_ImportType
-static PyTypeObject *__Pyx_ImportType(char *module_name, char *class_name,
+static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name,
     long size)
 {
     PyObject *py_module = 0;
     PyObject *result = 0;
     PyObject *py_name = 0;
 
+    py_module = __Pyx_ImportModule(module_name);
+    if (!py_module)
+        goto bad;
     #if PY_MAJOR_VERSION < 3
-    py_name = PyString_FromString(module_name);
+    py_name = PyString_FromString(class_name);
     #else
-    py_name = PyUnicode_FromString(module_name);
+    py_name = PyUnicode_FromString(class_name);
     #endif
     if (!py_name)
         goto bad;
-
-    py_module = __Pyx_ImportModule(module_name);
-    if (!py_module)
-        goto bad;
-    result = PyObject_GetAttrString(py_module, class_name);
+    result = PyObject_GetAttr(py_module, py_name);
+    Py_DECREF(py_name);
+    py_name = 0;
+    Py_DECREF(py_module);
+    py_module = 0;
     if (!result)
         goto bad;
     if (!PyType_Check(result)) {
@@ -3742,7 +5287,7 @@
     }
     return (PyTypeObject *)result;
 bad:
-    Py_XDECREF(py_name);
+    Py_XDECREF(py_module);
     Py_XDECREF(result);
     return 0;
 }
@@ -3750,7 +5295,7 @@
 
 #ifndef __PYX_HAVE_RT_ImportModule
 #define __PYX_HAVE_RT_ImportModule
-static PyObject *__Pyx_ImportModule(char *name) {
+static PyObject *__Pyx_ImportModule(const char *name) {
     PyObject *py_name = 0;
     PyObject *py_module = 0;
 
@@ -3832,7 +5377,7 @@
     );
     if (!py_code) goto bad;
     py_frame = PyFrame_New(
-        PyThreadState_Get(), /*PyThreadState *tstate,*/
+        PyThreadState_GET(), /*PyThreadState *tstate,*/
         py_code,             /*PyCodeObject *code,*/
         py_globals,          /*PyObject *globals,*/
         0                    /*PyObject *locals*/

Modified: trunk/yt/lagos/DepthFirstOctree.pyx
==============================================================================
--- trunk/yt/lagos/DepthFirstOctree.pyx	(original)
+++ trunk/yt/lagos/DepthFirstOctree.pyx	Tue Feb 10 14:12:34 2009
@@ -131,15 +131,15 @@
     cdef int cp
     for i_off in range(i_f):
         i = i_off + i_i
-        cz = (leftedges[2] + k*dx)
+        cx = (leftedges[0] + i*dx)
         if i_f > 2: print k, cz
         for j_off in range(j_f):
             j = j_off + j_i
             cy = (leftedges[1] + j*dx)
             for k_off in range(k_f):
                 k = k_off + k_i
+                cz = (leftedges[2] + k*dx)
                 cp = curpos[level]
-                cx = (leftedges[0] + i*dx)
                 corners[cp, 0] = cx 
                 corners[cp, 1] = cy 
                 corners[cp, 2] = cz

Modified: trunk/yt/lagos/HierarchyType.py
==============================================================================
--- trunk/yt/lagos/HierarchyType.py	(original)
+++ trunk/yt/lagos/HierarchyType.py	Tue Feb 10 14:12:34 2009
@@ -517,7 +517,7 @@
                             ff.astype("float64"),
                             g.LeftEdge.astype('float64'),
                             g.ActiveDimensions.astype('int32'),
-                            na.ones(1,dtype='float64') * g.dx, g.Level))
+                            na.ones(1,dtype='float64') * g.dds[0], g.Level))
             levels_all[g.Level] += g.ActiveDimensions.prod()
             levels_finest[g.Level] += g.child_mask.ravel().sum()
             g.clear_data()



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