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/3240#issuecomment-524527361,https://api.github.com/repos/pydata/xarray/issues/3240,524527361,MDEyOklzc3VlQ29tbWVudDUyNDUyNzM2MQ==,5635139,2019-08-24T07:09:04Z,2019-08-24T07:09:04Z,MEMBER,"In that example, `y` has no dimensions that aren't on the array. So while it is a bit unusual, the resulting object doesn't break any rules / invariants. Does that make sense?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,484089737
https://github.com/pydata/xarray/issues/3240#issuecomment-524399716,https://api.github.com/repos/pydata/xarray/issues/3240,524399716,MDEyOklzc3VlQ29tbWVudDUyNDM5OTcxNg==,1217238,2019-08-23T17:34:44Z,2019-08-23T17:34:44Z,MEMBER,"This was intentional. `array.assign_coords(name=value)` should be equivalent to `array = array.copy(deep=False); array.coords[name] = value`.

You are allowed to add new coordinates to a DataArray if they share existing dimensions. You are not allowed to add coordinates with new dimensions, because it is enforced as an invariant of the DataArray data model that all coordinate dimensions are found on the DataArray variable as well.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,484089737
https://github.com/pydata/xarray/issues/3240#issuecomment-524025546,https://api.github.com/repos/pydata/xarray/issues/3240,524025546,MDEyOklzc3VlQ29tbWVudDUyNDAyNTU0Ng==,5635139,2019-08-22T18:35:02Z,2019-08-22T18:35:02Z,MEMBER,"Interesting case, thanks for posting.

There's some logic that this could be allowed - it's a coord along no dimensions (whereas in the previous case it had to be on a dimension, unspecified). 

But that's what attributes are, so I'm not sure whether this is something we should support.

Does anyone know whether this is a deliberate decision?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,484089737