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/631#issuecomment-484934985,https://api.github.com/repos/pydata/xarray/issues/631,484934985,MDEyOklzc3VlQ29tbWVudDQ4NDkzNDk4NQ==,5635139,2019-04-19T15:39:54Z,2019-04-19T15:39:54Z,MEMBER,"Adding a v confusing error message which my colleague just hit (not exactly the same as this, but thought it wasn't worth a whole new issue):

```

In [10]: xr.DataArray(
    ...:     data=1,
    ...:     coords={
    ...:         'test':[1]#,
    ...:     },
    ...:     dims=['test']
    ...: )
---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
<ipython-input-10-41a019d49aae> in <module>
      4         'test':[1]#,
      5     },
----> 6     dims=['test']
      7 )

~/workspace/xarray/xarray/core/dataarray.py in __init__(self, data, coords, dims, name, attrs, encoding, indexes, fastpath)
    228
    229             data = as_compatible_data(data)
--> 230             coords, dims = _infer_coords_and_dims(data.shape, coords, dims)
    231             variable = Variable(dims, data, attrs, encoding, fastpath=True)
    232

~/workspace/xarray/xarray/core/dataarray.py in _infer_coords_and_dims(shape, coords, dims)
     76
     77         for d, s in zip(v.dims, v.shape):
---> 78             if s != sizes[d]:
     79                 raise ValueError('conflicting sizes for dimension %r: '
     80                                  'length %s on the data but length %s on '

KeyError: 'test'
```

...nothing to do with the `test` entry, it's that data is a scalar","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,112254767
https://github.com/pydata/xarray/issues/631#issuecomment-327726641,https://api.github.com/repos/pydata/xarray/issues/631,327726641,MDEyOklzc3VlQ29tbWVudDMyNzcyNjY0MQ==,2443309,2017-09-07T08:19:57Z,2017-09-07T08:19:57Z,MEMBER,"The first example here was fixed in #1539.

The second issue still exists but now requires `dims` to be specified explicitly. 

```Python
In [9]: Dataset({""a"": DataArray(np.zeros(3), dims='a', coords={""a"": list(""xyz"")})})
   ...: 
   ...: 
Out[9]: 
<xarray.Dataset>
Dimensions:  (a: 3)
Coordinates:
  * a        (a) float64 0.0 0.0 0.0
Data variables:
    *empty*
```

Do we agree it is safe to say that no key should be repeated between `data` and `coords`? ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,112254767
https://github.com/pydata/xarray/issues/631#issuecomment-149632771,https://api.github.com/repos/pydata/xarray/issues/631,149632771,MDEyOklzc3VlQ29tbWVudDE0OTYzMjc3MQ==,1217238,2015-10-20T16:59:23Z,2015-10-20T16:59:23Z,MEMBER,"Yes, @markelg I think you describe each of these issues correctly. They should each result in more informative errors.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,112254767
https://github.com/pydata/xarray/issues/631#issuecomment-149386132,https://api.github.com/repos/pydata/xarray/issues/631,149386132,MDEyOklzc3VlQ29tbWVudDE0OTM4NjEzMg==,1217238,2015-10-20T00:39:53Z,2015-10-20T00:39:53Z,MEMBER,"Oh my, this certainly does look like a bug (or several).
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,112254767