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  • dcherian · 3 ✖

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  • Automatic chunking of arrays ? · 3 ✖

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628582552 https://github.com/pydata/xarray/issues/4055#issuecomment-628582552 https://api.github.com/repos/pydata/xarray/issues/4055 MDEyOklzc3VlQ29tbWVudDYyODU4MjU1Mg== dcherian 2448579 2020-05-14T11:51:21Z 2020-05-14T11:51:21Z MEMBER

is_scalar(chunks) might be the appropriate condition. is_scalar is already imported from .utils in dataset.py

This seems to work fine in a lot of cases, except automatic chunking isn't implemented for object dtypes at the moment, so it fails if you pass a cftime coordinate, for example.

Can we catch this error and re-raise specifying "automatic chunking fails for object arrays. These include cftime DataArrays" or something like that?

 
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   Automatic chunking of arrays ? 617476316
628231949 https://github.com/pydata/xarray/issues/4055#issuecomment-628231949 https://api.github.com/repos/pydata/xarray/issues/4055 MDEyOklzc3VlQ29tbWVudDYyODIzMTk0OQ== dcherian 2448579 2020-05-13T20:35:49Z 2020-05-13T20:35:49Z MEMBER

Awesome! Please see https://xarray.pydata.org/en/stable/contributing.html for docs on contributing

 
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   Automatic chunking of arrays ? 617476316
628065564 https://github.com/pydata/xarray/issues/4055#issuecomment-628065564 https://api.github.com/repos/pydata/xarray/issues/4055 MDEyOklzc3VlQ29tbWVudDYyODA2NTU2NA== dcherian 2448579 2020-05-13T15:26:10Z 2020-05-13T15:26:49Z MEMBER

so da.chunk({dim_name: "auto"}) works but da.chunk("auto") does not. The latter is a relatively easy fix. We just need to update the condition here: https://github.com/pydata/xarray/blob/bd84186acbd84bd386134a5b60111596cee2d8ec/xarray/core/dataset.py#L1736-L1737

A PR would be very welcome if you have the time, @AndrewWilliams3142

 
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   Automatic chunking of arrays ? 617476316

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