issue_comments: 540187230

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html_url issue_url id node_id user created_at updated_at author_association body reactions performed_via_github_app issue
https://github.com/pydata/xarray/issues/2148#issuecomment-540187230 https://api.github.com/repos/pydata/xarray/issues/2148 540187230 MDEyOklzc3VlQ29tbWVudDU0MDE4NzIzMA== 2448579 2019-10-09T20:45:58Z 2019-10-09T20:45:58Z MEMBER

Everything but this last example works as expected

``` arr = xr.DataArray( np.ones((5, 2)), dims=('x', 'y'), coords={ 'x': ('x', np.array([1, 1, 1, 2, 2])), 'x1': ('x', np.array([1, 1, 1, 2, 2])), 'x2': ('x', np.array([1, 2, 3, 4, 5])), } )

arr.groupby(xr.DataArray([1,1,1,2,2], dims=('x'), name='y')).mean('x')

<xarray.DataArray (y: 4)> array([1., 1., 1., 1.]) Coordinates: * y (y) int64 1 2

```

 
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