issue_comments: 407560681

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https://github.com/pydata/xarray/issues/2308#issuecomment-407560681 https://api.github.com/repos/pydata/xarray/issues/2308 407560681 MDEyOklzc3VlQ29tbWVudDQwNzU2MDY4MQ== 1828519 2018-07-24T21:38:34Z 2018-07-24T21:38:34Z CONTRIBUTOR

I wouldn't expect it to add crs if there wasn't a grid_mapping specified, but if it was then I would. In a simple test where I did xr.open_dataset('my_nc.nc') which has a grid_mapping attribute, xarray does nothing special to create a crs or other named coordinate variable referencing the associated grid_mapping variable.

 
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