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/pull/2674#issuecomment-455273458,https://api.github.com/repos/pydata/xarray/issues/2674,455273458,MDEyOklzc3VlQ29tbWVudDQ1NTI3MzQ1OA==,5635139,2019-01-17T18:15:09Z,2019-01-17T18:15:09Z,MEMBER,"Is there a next step for a function which:
- Is a drop-in replacement for `.reduce`
- Similar to https://github.com/pydata/xarray/issues/1618, though maybe even simpler, i.e. only operates on a single input at first
- Wraps `apply_ufunc`
- Would restore dim order https://github.com/pydata/xarray/issues/1739
- Could be used by @fujiisoup 's recent functions, ref https://github.com/pydata/xarray/pull/2650#issuecomment-454164295 (though some of these may require multiple inputs, even though there's only one output?)

I'd be happy to give this a go if we agree on the broad design

For names, it's a shame the current `apply` isn't called `map`, and this could be `apply`. I'm not a great fan of `apply_raw`, since I'm can't yet see why it's any more 'raw'. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,399164733
https://github.com/pydata/xarray/pull/2674#issuecomment-455269655,https://api.github.com/repos/pydata/xarray/issues/2674,455269655,MDEyOklzc3VlQ29tbWVudDQ1NTI2OTY1NQ==,5635139,2019-01-17T18:03:04Z,2019-01-17T18:03:04Z,MEMBER,"> It's probably worth thinking about these APIs more systematically, see #1618, #1251, #1130

Nice, thanks for finding those

> It might also be clearer to split this functionality into two methods rather than the single reduce() method, e.g., reduce() and transform() in the model of pandas's groupby methods.

Is the split needed? I had thought that the function either
- returned a reduced array, and the output dims should be reduced
- returned an array with the original dims, and then output dims shouldn't be reduced","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,399164733
https://github.com/pydata/xarray/pull/2674#issuecomment-454387095,https://api.github.com/repos/pydata/xarray/issues/2674,454387095,MDEyOklzc3VlQ29tbWVudDQ1NDM4NzA5NQ==,5635139,2019-01-15T13:12:00Z,2019-01-15T13:12:00Z,MEMBER,"Thanks a lot for the comments @shoyer , that's v clarifying 

Is there a conceptual overlap between the goals of `.reduce` and `apply_ufunc`? I had initially thought that `.reduce` strictly reduced a dimension, though that's not actually the case given `cumsum`","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,399164733