issue_comments: 700600387

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https://github.com/pydata/xarray/issues/1527#issuecomment-700600387 https://api.github.com/repos/pydata/xarray/issues/1527 700600387 MDEyOklzc3VlQ29tbWVudDcwMDYwMDM4Nw== 10194086 2020-09-29T10:00:14Z 2020-09-29T10:00:14Z MEMBER

This is still relevant. Now raises

python ValueError: 'x' not present in all datasets and coords='different'. Either add 'x' to datasets where it is missing or specify coords='minimal'. I think the issue may be that _dummy_copy does not include the x-dimension: python xr.core.groupby._dummy_copy(d2.groupby('time.dayofyear').mean('time')) yields python <xarray.DataArray ()> array(nan)

 
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