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/3731#issuecomment-1234643971,https://api.github.com/repos/pydata/xarray/issues/3731,1234643971,IC_kwDOAMm_X85JlywD,3698640,2022-09-01T18:36:30Z,2022-09-01T18:36:30Z,CONTRIBUTOR,"FWIW I could definitely see use cases for allowing something like this... I have used cumbersome/ugly workarounds to work with variance-covariance matrices etc. So I'm not weighing in on the ""this should raise an error"" debate. I got briefly excited when I saw it *didn't* raise an error, until everything started unraveling 🙃 ","{""total_count"": 2, ""+1"": 1, ""-1"": 0, ""laugh"": 1, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,557257598
https://github.com/pydata/xarray/issues/3731#issuecomment-1234639080,https://api.github.com/repos/pydata/xarray/issues/3731,1234639080,IC_kwDOAMm_X85Jlxjo,3698640,2022-09-01T18:31:08Z,2022-09-01T18:31:08Z,CONTRIBUTOR,"ooh this is a fun one! came across this issue when we stumbled across a pendantic case writing tests (H/T @brews). I expected this to ""fail loudly in the constructor"" but it doesn't. note that currently AFAICT you cannot use positional slicing to achieve an intuitive result - the behavior seems more undefined/unpredictable
```python
# setup
import xarray as xr, pandas as pd, numpy as np
da = xr.DataArray(np.arange(8).reshape(2, 2, 2), coords=[[0, 1], [0, 1], ['a', 'b']], dims=[""ni"", ""ni"", ""shh""])
```
xarray seems to not know it has a problem:
```python
In [4]: da
Out[4]:
array([[[0, 1],
[2, 3]],
[[4, 5],
[6, 7]]])
Coordinates:
* ni (ni) int64 0 1
* shh (shh)
array([0, 1])
Coordinates:
ni int64 0
* shh (shh)
array([[[0, 1],
[2, 3]],
[[4, 5],
[6, 7]]])
Coordinates:
* ni (ni) int64 0 1
* shh (shh)
array([0, 1])
Coordinates:
ni int64 0
* shh (shh)