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  • dcherian · 2 ✖

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  • Numeric scalar variable attributes (including fill_value, scale_factor, add_offset) are 1-d instead of 0-d with h5netcdf engine, triggering ValueError: non-broadcastable output on application when loading single elements · 2 ✖

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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
703286087 https://github.com/pydata/xarray/issues/4471#issuecomment-703286087 https://api.github.com/repos/pydata/xarray/issues/4471 MDEyOklzc3VlQ29tbWVudDcwMzI4NjA4Nw== dcherian 2448579 2020-10-04T17:12:32Z 2020-10-04T17:12:32Z MEMBER

adapt other components to handle either scalars or length 1 arrays

I think we can make this change safely in the decoding machinery. As you point out, it will be backwards compatible.

 
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   Numeric scalar variable attributes (including fill_value, scale_factor, add_offset) are 1-d instead of 0-d with h5netcdf engine, triggering ValueError: non-broadcastable output on application when loading single elements 710876876
702872015 https://github.com/pydata/xarray/issues/4471#issuecomment-702872015 https://api.github.com/repos/pydata/xarray/issues/4471 MDEyOklzc3VlQ29tbWVudDcwMjg3MjAxNQ== dcherian 2448579 2020-10-02T17:50:36Z 2020-10-02T17:50:36Z MEMBER

other components (such as where the scale factor and add_offset are applied) need to be adapted to handle arrays of length 1 for those values.

Great diagnosis @gerritholl . This could be fixed here (I think): https://github.com/pydata/xarray/blob/333e8dba55f0165ccadf18f2aaaee9257a4d716b/xarray/coding/variables.py#L245-L263 Are you up for sending in a PR?

 
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   Numeric scalar variable attributes (including fill_value, scale_factor, add_offset) are 1-d instead of 0-d with h5netcdf engine, triggering ValueError: non-broadcastable output on application when loading single elements 710876876

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