New issue 1067: ds.h.find_max fail with cylindrical data https://bitbucket.org/yt_analysis/yt/issues/1067/dshfind_max-fail-with-cylin... Suoqing Ji: Test [data](http://yt-project.org/data/WDMerger_hdf5_chk_1000.tar.gz) and script: ``` #!python import yt ds = yt.load("WDmerger_hdf5_chk_1000/WDmerger_hdf5_chk_1000.hdf5") v, c = ds.h.find_max('density') ``` Error message: ``` #!bash v, c = ds.h.find_max('density') File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py", line 583, in find_max source.quantities.max_location(field) File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 540, in __call__ rv = super(MaxLocation, self).__call__(field) File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 58, in __call__ sto.result = self.process_chunk(ds, *args, **kwargs) File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 547, in process_chunk mx = array_like_field(data, -1, "x") File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/units/yt_array.py", line 1271, in array_like_field field = data._determine_fields(field)[0] File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 555, in _determine_fields finfo = self.ds._get_field_info("unknown", fname) File "/Users/jisuoqing/Workspace/code/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py", line 543, in _get_field_info raise YTFieldNotFound((ftype, fname), self) yt.utilities.exceptions.YTFieldNotFound: Could not find field '('all', 'x')' in WDmerger_hdf5_chk_1000/WDmerger_hdf5_chk_1000.hdf5. ``` Although I'm kind of know what causes this error, someone else might have a better and more global idea about this. Also I'm in no hurry to use this function -- it just appears and I report it here.