issue_comments: 407753531

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https://github.com/pydata/xarray/issues/2288#issuecomment-407753531 https://api.github.com/repos/pydata/xarray/issues/2288 407753531 MDEyOklzc3VlQ29tbWVudDQwNzc1MzUzMQ== 1828519 2018-07-25T13:26:45Z 2018-07-25T13:26:45Z CONTRIBUTOR

I was talking about open_dataset not reading standard CF files in the way we want, at least not the way it is now. I understand that setting the CRS in .coords will write out the CRS when you use to_netcdf. The issue is that a standard CF netcdf file created by someone else that strictly follows the CF standard will not be read in the same way. Put another way, you could not load a CF NetCDF file with open_dataset and write it out with to_netcdf and get the same output.

Also note that having the grid_mapping as a coordinate in xarray object results in it being listed in the coordinates attribute in the output netcdf file which is technically not part of the CF standard.

 
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