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/1951#issuecomment-369971985,https://api.github.com/repos/pydata/xarray/issues/1951,369971985,MDEyOklzc3VlQ29tbWVudDM2OTk3MTk4NQ==,1217238,2018-03-02T16:24:44Z,2018-03-02T16:24:44Z,MEMBER,"I like the idea of an einsum wrapper for xarray. This would probably be straightforward to build on top of the `apply_ufunc` machinery. I wouldn't worry about the lack of einsum for dask yet -- the linked dask issue already has several implementations, so we could easily add that later if desired.

There are at least two versions of this:
- A `dim` argument for `DataArray.dot` that indicates which dimension(s) to sum over.
- A function for applying this to many arrays simultaneously. Maybe `xarray.dot(da1, da2, da3, dims=['x', 'y'])`? This would use `einsum` internally but we don't need to specify the input dimensions again because we already have them on the DataArray objects.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301657312