issue_comments: 1396749591

@cmdupuis3 dimensions are not given in a particular order in the Dataset. There could be two DataArray's which have reversed dimensions for instance.

You would need to inspect the DataArray's:

python da = xr.DataArray([[1,2,3],[4,5,6],[7,8,9]], coords={'a':[1,2,3], 'b':[1,2,3]}) ds = xr.Dataset({'da':da}) ds0 = ds.expand_dims('yomama', axis=0) print(ds0.dims) print(ds0.da.dims) ds1 = ds.expand_dims('yomama', axis=1) print(ds1.dims) print(ds1.da.dims) ds2 = ds.expand_dims('yomama', axis=2) print(ds2.dims) print(ds2.da.dims) python Frozen({'a': 3, 'b': 3, 'yomama': 1}) ('yomama', 'a', 'b') Frozen({'a': 3, 'b': 3, 'yomama': 1}) ('a', 'yomama', 'b') Frozen({'a': 3, 'b': 3, 'yomama': 1}) ('a', 'b', 'yomama')