I have some AMR output data (from AMRClaw, for which there is not a yt front end) and I'm following instructions here: http://yt-project.org/docs/3.0/examining/loading_data.html#generic-amr-data My script is here: https://gist.github.com/30d8bdf41422dc20bb95 The yt.load_amr_grids() command seems to complete successfully. But when I try to generate a slice plot, I get the following: AttributeError Traceback (most recent call last) <ipython-input-30-384f3d2d8b79> in <module>() ----> 1 yt.SlicePlot(ds, 0, "density") /Users/ketch/anaconda/lib/python2.7/site-packages/yt/visualization/plot_window.pyc in SlicePlot(ds, normal, fields, axis, *args, **kwargs) 1840 del kwargs['north_vector'] 1841 -> 1842 return AxisAlignedSlicePlot(ds, normal, fields, *args, **kwargs) /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) 1012 slc = ds.slice(axis, center[axis], 1013 field_parameters = field_parameters, center=center) -> 1014 slc.get_data(fields) 1015 PWViewerMPL.__init__(self, slc, bounds, origin=origin, 1016 fontsize=fontsize, fields=fields, /Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/data_containers.pyc in get_data(self, fields) 600 def get_data(self, fields=None): 601 if self._current_chunk is None: --> 602 self.index._identify_base_chunk(self) 603 if fields is None: return 604 nfields = [] /Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/data_containers.pyc in index(self) 127 if self._index is not None: 128 return self._index --> 129 self._index = self.ds.index 130 return self._index 131 /Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/static_output.pyc in index(self) 272 raise RuntimeError("You should not instantiate Dataset.") 273 self._instantiated_index = self._index_class( --> 274 self, dataset_type=self.dataset_type) 275 # Now we do things that we need an instantiated index for 276 # ...first off, we create our field_info now. /Users/ketch/anaconda/lib/python2.7/site-packages/yt/frontends/stream/data_structures.pyc in __init__(self, ds, dataset_type) 167 self.float_type = "float64" 168 self.directory = os.getcwd() --> 169 GridIndex.__init__(self, ds, dataset_type) 170 171 def _count_grids(self): /Users/ketch/anaconda/lib/python2.7/site-packages/yt/geometry/geometry_handler.pyc in __init__(self, ds, dataset_type) 55 56 mylog.debug("Setting up domain geometry.") ---> 57 self._setup_geometry() 58 59 mylog.debug("Initializing data grid data IO") /Users/ketch/anaconda/lib/python2.7/site-packages/yt/geometry/grid_geometry_handler.pyc in _setup_geometry(self) 56 57 mylog.debug("Constructing grid objects.") ---> 58 self._populate_grid_objects() 59 60 mylog.debug("Re-examining index") /Users/ketch/anaconda/lib/python2.7/site-packages/yt/frontends/stream/data_structures.pyc in _populate_grid_objects(self) 242 def _populate_grid_objects(self): 243 for g in self.grids: --> 244 g._setup_dx() 245 self.max_level = self.grid_levels.max() 246 /Users/ketch/anaconda/lib/python2.7/site-packages/yt/data_objects/grid_patch.pyc in _setup_dx(self) 136 id = self.id<http://self.id/> - self._id_offset 137 if self.Parent is not None: --> 138 self.dds = self.Parent.dds.ndarray_view() / self.ds.refine_by 139 else: 140 LE, RE = self.index.grid_left_edge[id,:], \ AttributeError: 'StreamGrid' object has no attribute 'dds' I would greatly appreciate any help. ________________________________ This message and its contents including attachments are intended solely for the original recipient. If you are not the intended recipient or have received this message in error, please notify me immediately and delete this message from your computer system. Any unauthorized use or distribution is prohibited. Please consider the environment before printing this email.