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/pull/1203#issuecomment-477188610,https://api.github.com/repos/pydata/xarray/issues/1203,477188610,MDEyOklzc3VlQ29tbWVudDQ3NzE4ODYxMA==,2448579,2019-03-27T14:45:00Z,2019-03-27T15:51:22Z,MEMBER,"Yes you'll have to call `ax.coastlines()` on every axis you want a coastline on. The `subplot_kws` kwarg is passed down to `plt.subplots` (see documentation here https://matplotlib.org/api/_as_gen/matplotlib.pyplot.subplots.html). 

You should be able to do:
``` python
g = ds_v_test.plot(...)
g.map(lambda: plt.gca().coastlines())
```

The other option would be to loop over `g.axes.flat` as in http://xarray.pydata.org/en/stable/plotting.html#maps","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,200376941