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<div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">I have some AMR output data (from AMRClaw, for which there is not a yt front end) and I'm following instructions here:</span>
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<div style="font-family:arial,sans-serif;font-size:13px"><a href="http://yt-project.org/docs/3.0/examining/loading_data.html#generic-amr-data" target="_blank">http://yt-project.org/docs/3.0/examining/loading_data.html#generic-amr-data</a><br>
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<div style="font-family:arial,sans-serif;font-size:13px">My script is here:</div>
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<div style="font-family:arial,sans-serif;font-size:13px"><a href="https://gist.github.com/30d8bdf41422dc20bb95" target="_blank">https://gist.github.com/30d8bdf41422dc20bb95</a><br>
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<div style="font-family:arial,sans-serif;font-size:13px">The <span class="" style="color:rgb(51,51,51);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:12px;line-height:16.7999992370605px;white-space:pre">yt</span><span class="" style="font-weight:bold;color:rgb(51,51,51);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:12px;line-height:16.7999992370605px;white-space:pre">.</span><span class="" style="color:rgb(51,51,51);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:12px;line-height:16.7999992370605px;white-space:pre">load_amr_grids</span><span style="color:rgb(51,51,51);font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:12px;line-height:16.7999992370605px;white-space:pre">()
</span>command seems to complete successfully.</div>
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<div style="font-family:arial,sans-serif;font-size:13px">But when I try to generate a slice plot, I get the following:</div>
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<div>AttributeError                            Traceback (most recent call last)</div>
<div><ipython-input-30-384f3d2d8b79> in <module>()</div>
<div>----> 1 yt.SlicePlot(ds, 0, "density")</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/visualization/plot_window.pyc in SlicePlot(ds, normal, fields, axis, *args, **kwargs)</div>
<div>   1840             del kwargs['north_vector']</div>
<div>   1841</div>
<div>-> 1842         return AxisAlignedSlicePlot(ds, normal, fields, *args, **kwargs)</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/visualization/plot_window.pyc in __init__(self, ds, axis, fields, center, width, axes_unit, origin, fontsize, field_parameters, window_size, aspect)</div>
<div>   1012         slc = ds.slice(axis, center[axis],</div>
<div>   1013             field_parameters = field_parameters, center=center)</div>
<div>-> 1014         slc.get_data(fields)</div>
<div>   1015         PWViewerMPL.__init__(self, slc, bounds, origin=origin,</div>
<div>   1016                              fontsize=fontsize, fields=fields,</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/data_containers.pyc in get_data(self, fields)</div>
<div>    600     def get_data(self, fields=None):</div>
<div>    601         if self._current_chunk is None:</div>
<div>--> 602             self.index._identify_base_chunk(self)</div>
<div>    603         if fields is None: return</div>
<div>    604         nfields = []</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/data_containers.pyc in index(self)</div>
<div>    127         if self._index is not None:</div>
<div>    128             return self._index</div>
<div>--> 129         self._index = self.ds.index</div>
<div>    130         return self._index</div>
<div>    131</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/static_output.pyc in index(self)</div>
<div>    272                 raise RuntimeError("You should not instantiate Dataset.")</div>
<div>    273             self._instantiated_index = self._index_class(</div>
<div>--> 274                 self, dataset_type=self.dataset_type)</div>
<div>    275             # Now we do things that we need an instantiated index for</div>
<div>    276             # ...first off, we create our field_info now.</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/frontends/stream/data_structures.pyc in __init__(self, ds, dataset_type)</div>
<div>    167         self.float_type = "float64"</div>
<div>    168         self.directory = os.getcwd()</div>
<div>--> 169         GridIndex.__init__(self, ds, dataset_type)</div>
<div>    170</div>
<div>    171     def _count_grids(self):</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/geometry/geometry_handler.pyc in __init__(self, ds, dataset_type)</div>
<div>     55</div>
<div>     56         mylog.debug("Setting up domain geometry.")</div>
<div>---> 57         self._setup_geometry()</div>
<div>     58</div>
<div>     59         mylog.debug("Initializing data grid data IO")</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/geometry/grid_geometry_handler.pyc in _setup_geometry(self)</div>
<div>     56</div>
<div>     57         mylog.debug("Constructing grid objects.")</div>
<div>---> 58         self._populate_grid_objects()</div>
<div>     59</div>
<div>     60         mylog.debug("Re-examining index")</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/frontends/stream/data_structures.pyc in _populate_grid_objects(self)</div>
<div>    242     def _populate_grid_objects(self):</div>
<div>    243         for g in self.grids:</div>
<div>--> 244             g._setup_dx()</div>
<div>    245         self.max_level = self.grid_levels.max()</div>
<div>    246</div>
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<div>/Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/grid_patch.pyc in _setup_dx(self)</div>
<div>    136         id = <a href="http://self.id/" target="_blank">self.id</a> - self._id_offset</div>
<div>    137         if self.Parent is not None:</div>
<div>--> 138             self.dds = self.Parent.dds.ndarray_view() / self.ds.refine_by</div>
<div>    139         else:</div>
<div>    140             LE, RE = self.index.grid_left_edge[id,:], \</div>
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<div>AttributeError: 'StreamGrid' object has no attribute 'dds'</div>
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<div style="font-family:arial,sans-serif;font-size:13px">I would greatly appreciate any help.</div>
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