issue_comments: 330168943

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https://github.com/pydata/xarray/pull/1473#issuecomment-330168943 https://api.github.com/repos/pydata/xarray/issues/1473 330168943 MDEyOklzc3VlQ29tbWVudDMzMDE2ODk0Mw== 6815844 2017-09-18T09:27:38Z 2017-09-18T09:27:38Z MEMBER

Another case that might be confusing, ```python import numpy as np import xarray as xr

da = xr.DataArray(np.random.randn(3), dims=['x'], coords={'x': ['a', 'b', 'c']}) index_ds = xr.Dataset({}, coords={'x': [0, 1]})

this results in the coordinate confliction

da.isel(x=index_ds['x']) `` Asindex_ds['x']` has a coordinate of itself, it results in the coordinate confliction error, but it is clear that user does not want to attach it as a coordinate. I think in such a case, the indexer's coordinate should be silently dropped.

 
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