issue_comments: 1274963421

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https://github.com/pydata/xarray/pull/7152#issuecomment-1274963421 https://api.github.com/repos/pydata/xarray/issues/7152 1274963421 IC_kwDOAMm_X85L_mXd 2448579 2022-10-11T16:27:15Z 2022-10-11T16:30:32Z MEMBER

Thanks @patrick-naylor !

Instead of using Dataset.reduce I think we want something like python def cumsum(..., dim): return xr.apply_ufunc( np.cumsum if skipna else np.nancumsum, obj, input_core_dims=[dim], output_core_dims=[dim], kwargs={"axis": -1}, ) # now transpose dimensions back to input order

to fix #6528.

At the moment, this should also work on GroupBy objects quite nicely.

 
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