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
359679690,MDU6SXNzdWUzNTk2Nzk2OTA=,2414,Indexing not properly working with object dtype element ?,277579,closed,0,,,4,2018-09-12T22:47:09Z,2021-04-05T14:54:37Z,2021-04-05T14:54:37Z,CONTRIBUTOR,,,,"# Small ""working"" demo of the observed issue:

```python
import xarray as xr
import numpy as np
er = xr.DataArray(np.array((np.arange(3), np.arange(6)))) # dtype=object because two different vector size
print(er.data[0]) # Does work
print(er[0]) # Does not work (ValueError)

#I'm a bit puzzled...
```
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359935048,MDExOlB1bGxSZXF1ZXN0MjE1MzEzMjQ1,2415,add test for 1D object array indexing,277579,closed,0,,,4,2018-09-13T14:58:42Z,2021-04-05T14:54:37Z,2021-04-05T14:54:37Z,CONTRIBUTOR,,0,pydata/xarray/pulls/2415,"Test for issue #2414

closes #2414
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103703011,MDU6SXNzdWUxMDM3MDMwMTE=,553,operation on complex number data,277579,closed,0,,,10,2015-08-28T11:38:46Z,2018-06-05T06:32:26Z,2015-09-01T20:28:50Z,CONTRIBUTOR,,,,"Hello,

Would it be possible to add complex function operation on xray.DataArray ?

Function like np.sin, np.abs works properly on xray.DataArray containing complex numbers and
returns a DataArray (as expected).
However, np.real, np.imag, np.angle operation return an numpy.ndarray array instead of DataArray...
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