issue_comments: 554404625

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https://github.com/pydata/xarray/pull/3527#issuecomment-554404625 https://api.github.com/repos/pydata/xarray/issues/3527 554404625 MDEyOklzc3VlQ29tbWVudDU1NDQwNDYyNQ== 14808389 2019-11-15T15:29:53Z 2019-11-15T15:29:53Z MEMBER

well, it was surprising to me. It also might be problematic that it matters if we first pull out a DataArray and then compute or the other way around: ```python

ds = xr.Dataset( ... data_vars={ ... "a": ( ... ("x", "y"), ... [[1, 11, 26], [2, 12, 22], [3, 13, 23],^I[4, 16,^I24], [5, 15, 25]], ... ) ... }, ... coords={"x": [1, 1, 1, 2, 2], "y": [0, 0, 1]}, ... ) a_ds = ds.groupby("y").quantile(0).a a_da = ds.a.groupby("y").quantile(0) a_ds.identical(a_da) False a_ds.transpose().identical(a_da) True ```

 
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