issue_comments: 267086215

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https://github.com/pydata/xarray/issues/1163#issuecomment-267086215 https://api.github.com/repos/pydata/xarray/issues/1163 267086215 MDEyOklzc3VlQ29tbWVudDI2NzA4NjIxNQ== 1217238 2016-12-14T16:46:05Z 2016-12-14T16:46:05Z MEMBER

I'm a little surprised that CDO cannot handle a NaN _FillValue -- are you sure this is actually the case? If so, it might be worth raising the issue with the CDO developers.

But actually, xarray currently does not even set _FillValue by default, though you can do this yourself on a per-variable basis by setting encoding. I think it would be reasonable to default to a _FillValue of NaN for floating point dtypes if that would help third party tools, given that that is how xarray's data model works (any other default choice would run the risk of over-writing user data).

 
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