issue_comments: 451877705

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https://github.com/pydata/xarray/pull/2652#issuecomment-451877705 https://api.github.com/repos/pydata/xarray/issues/2652 451877705 MDEyOklzc3VlQ29tbWVudDQ1MTg3NzcwNQ== 6815844 2019-01-07T09:43:17Z 2019-01-07T09:43:17Z MEMBER

@max-sixty I am not sure whether DataArray.dot is a right choice. But I am wondering for cov case, it sounds like to compute a covariance of the DataArray itself rather than the cross covariance with another DataArray.

 
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