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
2273401533,PR_kwDOAMm_X85uPt_n,8991,Add argument check_dims to assert_allclose to allow transposed inputs (#5733),408363,open,0,,,1,2024-05-01T12:05:40Z,2024-05-04T21:42:26Z,,FIRST_TIME_CONTRIBUTOR,,0,pydata/xarray/pulls/8991,"<!-- Feel free to remove check-list items aren't relevant to your change -->

- [x] Closes #5733 
- [x] Tests added
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
- [ ] New functions/methods are listed in `api.rst`
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240676360,MDU6SXNzdWUyNDA2NzYzNjA=,1470,Dataset.mean drops coordinates,408363,closed,0,,,1,2017-07-05T14:48:28Z,2018-05-18T19:30:43Z,2018-05-18T19:30:43Z,NONE,,,,"Hi,

Dataset.mean drops coordinates, unlike DataArray.mean:
```
x = xarray.DataArray([2., 4.], 
                     coords={'a':[1., 2.], 'b': 3.}, 
                     dims=['a'],
                     name='name')
print 'DataArray mean:'
print x.mean(dim='a')
print 'Dataset mean:'
print x.to_dataset().mean(dim='a')['name']
```
Output
```
DataArray mean
<xarray.DataArray 'name' ()>
array(3.0)
Coordinates:
    b        float64 3.0
Dataset mean
<xarray.DataArray 'name' ()>
array(3.0)
```

Thanks
Ignacio
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