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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
484270833 MDU6SXNzdWU0ODQyNzA4MzM= 3248 combine_by_coords fails with DataArrays dcherian 2448579 closed 0     11 2019-08-23T00:11:38Z 2021-07-02T21:34:36Z 2021-07-02T21:34:36Z MEMBER      

MCVE Code Sample

python da1 = xr.DataArray([1, 2, 3], dims='x', coords={'x': [0, 1, 2]}) da2 = xr.DataArray([3, 4, 5], dims='x', coords={'x': [2, 3, 4]}) xr.combine_by_coords([da1, da2])

```

ValueError Traceback (most recent call last) <ipython-input-133-d27216ba5688> in <module> 1 da1 = xr.DataArray([1, 2, 3], dims='x', coords={'x': [0, 1, 2]}) 2 da2 = xr.DataArray([3, 4, 5], dims='x', coords={'x': [2, 3, 4]}) ----> 3 xr.combine_by_coords([da1, da2])

~/work/python/xarray/xarray/core/combine.py in combine_by_coords(datasets, compat, data_vars, coords, fill_value, join) 619 compat=compat, 620 fill_value=fill_value, --> 621 join=join, 622 ) 623

~/work/python/xarray/xarray/core/merge.py in merge(objects, compat, join, fill_value) 588 ) 589 --> 590 obj = obj.to_dataset() if isinstance(obj, DataArray) else obj 591 dict_like_objects.append(obj) 592

~/work/python/xarray/xarray/core/dataarray.py in to_dataset(self, dim, name) 478 return self._to_dataset_split(dim) 479 else: --> 480 return self._to_dataset_whole(name) 481 482 @property

~/work/python/xarray/xarray/core/dataarray.py in _to_dataset_whole(self, name, shallow_copy) 426 if name is None: 427 raise ValueError( --> 428 "unable to convert unnamed DataArray to a " 429 "Dataset without providing an explicit name" 430 )

ValueError: unable to convert unnamed DataArray to a Dataset without providing an explicit name ```

To get what I want, I need xr.combine_by_coords([da1.to_dataset(name='a'), da2.to_dataset(name='a')]).a

I think the issue is that the code uses to_dataset instead of _to_temp_dataset

 
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   completed xarray 13221727 issue
484639035 MDExOlB1bGxSZXF1ZXN0MzEwNDc1MzIy 3255 Sparse fixes for reindex dcherian 2448579 closed 0     2 2019-08-23T17:39:08Z 2019-08-27T00:00:48Z 2019-08-27T00:00:44Z MEMBER   0 pydata/xarray/pulls/3255
  • [x] Tests added
  • [x] Passes black . && mypy . && flake8
  • [x] Fully documented, including whats-new.rst for all changes and api.rst for new API
 
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     xarray 13221727 pull

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