issue_comments: 269709113

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https://github.com/pydata/xarray/issues/1151#issuecomment-269709113 https://api.github.com/repos/pydata/xarray/issues/1151 269709113 MDEyOklzc3VlQ29tbWVudDI2OTcwOTExMw== 1217238 2016-12-29T23:22:13Z 2016-12-29T23:22:13Z MEMBER

Is there any helper function to facilitate this?

Yes, indeed. _maybe_promote returns dtype and fill_value for inserting missing values, based on an original dtype. I guess it makes sense to start with calling one of the numpy utilities such as numpy.result_type for finding the common dtype to insert into _maybe_promote.

 
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