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/2028#issuecomment-377318151,https://api.github.com/repos/pydata/xarray/issues/2028,377318151,MDEyOklzc3VlQ29tbWVudDM3NzMxODE1MQ==,1217238,2018-03-29T17:51:27Z,2018-03-29T17:51:27Z,MEMBER,"@maxim-lian Probably. Or you could make the `pandas.Index` explicitly, e.g., `da.sel(a=da.c.to_index().get_indexer(['x', 'y']))`.

We should really add `DataArray.isin()` (https://github.com/pydata/xarray/issues/1268).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,309691307
https://github.com/pydata/xarray/issues/2028#issuecomment-377311481,https://api.github.com/repos/pydata/xarray/issues/2028,377311481,MDEyOklzc3VlQ29tbWVudDM3NzMxMTQ4MQ==,1217238,2018-03-29T17:28:58Z,2018-03-29T17:28:58Z,MEMBER,This has some connections to the broader indexes refactor envisioned in https://github.com/pydata/xarray/issues/1603.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,309691307
https://github.com/pydata/xarray/issues/2028#issuecomment-377311169,https://api.github.com/repos/pydata/xarray/issues/2028,377311169,MDEyOklzc3VlQ29tbWVudDM3NzMxMTE2OQ==,1217238,2018-03-29T17:28:14Z,2018-03-29T17:28:14Z,MEMBER,"we're discussed this before: https://github.com/pydata/xarray/issues/934

I agree that this would be nice to support in theory. The challenge is that we would need to create (and then possibly throw away?) a pandas.Index do to the actual indexing, or use a numpy search function like `np.isin()`. Neither of these are very efficient.

Conceptually, I think it makes sense to support indexing on arbitrary variables, which is simply more expensive if an index is not already set. Dimension coordinates would not be special except that they have indexes created automatically.","{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,309691307