issue_comments: 373576583

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https://github.com/pydata/xarray/issues/1995#issuecomment-373576583 https://api.github.com/repos/pydata/xarray/issues/1995 373576583 MDEyOklzc3VlQ29tbWVudDM3MzU3NjU4Mw== 6213168 2018-03-16T01:40:05Z 2018-03-16T01:40:05Z MEMBER

For this specific problem, I think you could solve it with xarray.apply_ufunc by writing something like a gufunc that keeps the reduced axis as size 1 to apply to each chunk, and afterwards summing up along that dimension.

@shoyer could you make an example? That was my first thought but I could not figure out how to make the apply_ufunc do it.

 
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