issue_comments: 553435066

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https://github.com/pydata/xarray/issues/3518#issuecomment-553435066 https://api.github.com/repos/pydata/xarray/issues/3518 553435066 MDEyOklzc3VlQ29tbWVudDU1MzQzNTA2Ng== 1217238 2019-11-13T14:46:58Z 2019-11-13T14:46:58Z MEMBER

We should definitely have a fill_value option here, and ideally a sparse option, too.

Conceptually unstack is very similar to from_dataframe.

 
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