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/4476#issuecomment-788732242,https://api.github.com/repos/pydata/xarray/issues/4476,788732242,MDEyOklzc3VlQ29tbWVudDc4ODczMjI0Mg==,30388627,2021-03-02T08:42:51Z,2021-03-02T08:42:51Z,NONE,"@markusritschel I tested v0.17.0 and it doesn't work.

```
data = np.random.rand(4, 3)
locs = [""IA"", ""IL"", ""IN""]
times = pd.date_range(""2000-01-01"", periods=4)
foo = xr.DataArray(data, coords=[times, locs], dims=[""time"", ""space""])
foo.groupby('space').argmax('time')
```

Error: `AttributeError: 'DataArrayGroupBy' object has no attribute 'argmax'`","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,712217045