issue_comments: 332949221

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https://github.com/pydata/xarray/issues/1598#issuecomment-332949221 https://api.github.com/repos/pydata/xarray/issues/1598 332949221 MDEyOklzc3VlQ29tbWVudDMzMjk0OTIyMQ== 1217238 2017-09-28T20:07:15Z 2017-09-28T20:07:15Z MEMBER

There is also the philosophical problem of fill values for coordinate variables.

Indeed, this is prohibited by CF conventions -- but xarray (like pandas) takes a more flexible approach here, allowing for missing values for all variables.

You can already specify an explicit choice for _FillValue, e.g., ds.to_netcdf(..., encoding={'my_variable': {'_FillValue': 1e35}}). Allowing {'_FillValue': False} to indicate that _FillValue should not be included would be a simple, easy fix, so we should probably do that regardless.

(There is no need worry about False conflicting with a legitimate fill value since netCDF does not have a boolean dtype.)

 
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