[yt-dev] Issue #1281: YTQuadTreeProj contains many unusable methods (yt_analysis/yt)
scott_feister
issues-reply at bitbucket.org
Wed Sep 21 13:14:35 PDT 2016
New issue 1281: YTQuadTreeProj contains many unusable methods
https://bitbucket.org/yt_analysis/yt/issues/1281/ytquadtreeproj-contains-many-unusable
scott_feister:
Unless I am understanding something wrong, there are several non-functioning methods listed in YTQuadTreeProj.
The [auto-generated documentation](yt-project.org/doc/reference/api/generated/yt.data_objects.construction_data_containers.YTQuadTreeProj.html) lists methods like "min()", "max()", "mean()", "integrate()", etc. These methods are also available to the python interface, but almost all of them just throw errors at me that say "Data selector... not implemented".
This is some combination of:
1. A bug
2. An oversight in documentation
3. An issue with method inheritance for YTQuadTreeProj
OR I just messed something up.
```
#!python
import yt
exampledir = "/home/sfeister/test/yttest/ytExampleData/"
ds = yt.load(exampledir + "Enzo_64/DD0043/data0043")
reg = ds.all_data()
print reg.min('Density') # Works
proj = reg.integrate('Density', 2) # Do a projection of the region
print(proj.__doc__) # Methods of YTQuadTree include "integrate", "min", etc.
print("/n/n")
print proj.min('Density') # Fails, with error below
print proj.integrate('Density', 1) # Fails, similar error
```
Error is as follows:
```
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/data_containers.py", line 778, in min
rv += (self._compute_extrema(f)[0],)
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/data_containers.py", line 706, in _compute_extrema
mi, ma = self.quantities.extrema(field)
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/derived_quantities.py", line 510, in __call__
rv = super(Extrema, self).__call__(fields, non_zero)
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/derived_quantities.py", line 66, in __call__
for sto, ds in parallel_objects(chunks, -1, storage = storage):
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 508, in parallel_objects
for result_id, obj in oiter:
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/data_containers.py", line 1087, in chunks
for chunk in self.index._chunk(self, chunking_style, **kwargs):
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/geometry/geometry_handler.py", line 251, in _chunk
self._identify_base_chunk(dobj)
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/geometry/grid_geometry_handler.py", line 293, in _identify_base_chunk
gi = dobj.selector.select_grids(self.grid_left_edge,
File "/home/sfeister/anaconda2/lib/python2.7/site-packages/yt/data_objects/data_containers.py", line 1075, in selector
raise YTDataSelectorNotImplemented(self._type_name)
yt.utilities.exceptions.YTDataSelectorNotImplemented: Data selector 'proj' not implemented.
```
Best,
Scott
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