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  • dcherian · 4 ✖

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  • Implement polyfit? · 4 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
561241142 https://github.com/pydata/xarray/issues/3349#issuecomment-561241142 https://api.github.com/repos/pydata/xarray/issues/3349 MDEyOklzc3VlQ29tbWVudDU2MTI0MTE0Mg== dcherian 2448579 2019-12-03T16:17:00Z 2019-12-03T16:17:00Z MEMBER

xyzpy has a polyfit too : https://xyzpy.readthedocs.io/en/latest/manipulate.html

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  Implement polyfit? 499477363
537552488 https://github.com/pydata/xarray/issues/3349#issuecomment-537552488 https://api.github.com/repos/pydata/xarray/issues/3349 MDEyOklzc3VlQ29tbWVudDUzNzU1MjQ4OA== dcherian 2448579 2019-10-02T15:40:04Z 2019-10-02T15:40:04Z MEMBER

https://xscale.readthedocs.io/en/latest/generated/xscale.signal.fitting.polyfit.html#xscale.signal.fitting.polyfit

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  Implement polyfit? 499477363
536663815 https://github.com/pydata/xarray/issues/3349#issuecomment-536663815 https://api.github.com/repos/pydata/xarray/issues/3349 MDEyOklzc3VlQ29tbWVudDUzNjY2MzgxNQ== dcherian 2448579 2019-09-30T17:25:38Z 2019-09-30T17:25:38Z MEMBER

The quickest way to close this is probably to extend @fujiisoup's xr-scipy(https://github.com/fujiisoup/xr-scipy) to wrap scipy.linalg.lstsq and dask.array.linalg.lstsq. It is likely that all the necessary helper functions already exist.

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  Implement polyfit? 499477363
535967743 https://github.com/pydata/xarray/issues/3349#issuecomment-535967743 https://api.github.com/repos/pydata/xarray/issues/3349 MDEyOklzc3VlQ29tbWVudDUzNTk2Nzc0Mw== dcherian 2448579 2019-09-27T14:39:02Z 2019-09-27T15:07:33Z MEMBER

dask has lstsq https://docs.dask.org/en/latest/array-api.html#dask.array.linalg.lstsq . Would that avoid the dimension-must-have-one-chunk issue?

EDIT: I am in favour of adding this. It's a common use case like differentiate and integrate

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  Implement polyfit? 499477363

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