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/2915#issuecomment-485928903,https://api.github.com/repos/pydata/xarray/issues/2915,485928903,MDEyOklzc3VlQ29tbWVudDQ4NTkyODkwMw==,6628425,2019-04-23T18:50:19Z,2019-04-23T18:50:19Z,MEMBER,"Thanks @fabienpaulot  -- this could probably use a better error message.  The arguments passed to `x` and `y` must be dimension or coordinate names of the DataArray rather than DataArrays themselves.  In your case you can assign `xcntr` and `ycntr` as coordinates of `test` and then plot:

```python
test = test.assign_coords(x=xcntr.rename({'nxp': 'xh', 'nyp': 'yh'}),
                          y=ycntr.rename({'nxp': 'xh', 'nyp': 'yh'}))
test['nh4_stf'].plot.contourf(x='x', y='y', ax=ax, transform=ccrs.PlateCarree())
```

The renaming is necessary so the dimension names match that of `test`.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,436311057