issue_comments: 1068703649

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https://github.com/pydata/xarray/pull/6353#issuecomment-1068703649 https://api.github.com/repos/pydata/xarray/issues/6353 1068703649 IC_kwDOAMm_X84_sx-h 2448579 2022-03-16T03:52:49Z 2022-03-16T03:52:49Z MEMBER

@mathause I suspect coarsen.construct is faster because it's a simple reshape (ignoring the copies associated with handling the boundary condition): https://github.com/pydata/xarray/blob/95bb9ae4233c16639682a532c14b26a3ea2728f3/xarray/core/variable.py#L2373

Unstacking allocates a new array and then assigns all values. It is definitely the more general solution though.

We should discuss this in the proposed cookbook (https://github.com/pydata/xarray/issues/1790)

 
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