issues: 195576963

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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
195576963 MDU6SXNzdWUxOTU1NzY5NjM= 1163 User warning / more transparent _FillValue interface for .to_netcdf() 3217406 closed 0     3 2016-12-14T16:23:05Z 2016-12-23T05:44:00Z 2016-12-23T05:44:00Z CONTRIBUTOR      

Since many tools (for example cdo) do not work well with NaN values, the default missing value setting for the .to_netcdf() method is not well-suited to enable optimal data reuse.

One option would be to add a fill_value=NaN option to .to_netcdf() and output a warning message whenever NaNs are written to netCDF: 'The data being written to netCDF includes missing values (NaN) that are often not easily handled by other netCDF softwares. It is strongly encouraged to coerce missing data to a valid yet large floating point value (for example, 1e20 for float) by calling .to_netcdf(..., fill_value=1e20)'.

 
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   completed 13221727 issue

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