id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
197057007,MDExOlB1bGxSZXF1ZXN0OTkwMjIzODE=,1178,Fix inconsistent behaviour for xarray.DataArray.rename,14014177,closed,0,,,4,2016-12-21T23:18:24Z,2016-12-23T17:26:41Z,2016-12-23T17:26:32Z,CONTRIBUTOR,,0,pydata/xarray/pulls/1178,"Attempt to fix #1177

Please let me know, if PR requires further refinement. ","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/1178/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
196984274,MDU6SXNzdWUxOTY5ODQyNzQ=,1177,Inconsistent behaviour for xarray.DataArray.rename,14014177,closed,0,,,1,2016-12-21T17:05:47Z,2016-12-23T17:26:32Z,2016-12-23T17:26:32Z,CONTRIBUTOR,,,,"Hi,

thanks for creating `xarray`, I like it a lot. However I want to ask, why the behaviour of `xarray.DataArray.rename` is so incosistent:

```python
import xarray as xr
x = xr.DataArray([1, 2, 3], dims=('a',), coords={'a': [1, 2, 3]}, name='a')
x.rename({'a': 'b'})
```

renames the name of `x` not the coordinate! Could you explain the behaviour to me? I do not understand it, or consider it as inconsistent. 

Thanks, Markus","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/1177/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed,13221727,issue