issue_comments: 702708138

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https://github.com/pydata/xarray/issues/4471#issuecomment-702708138 https://api.github.com/repos/pydata/xarray/issues/4471 702708138 MDEyOklzc3VlQ29tbWVudDcwMjcwODEzOA== 500246 2020-10-02T12:32:40Z 2020-10-02T12:32:40Z CONTRIBUTOR

According to The NetCDF User's Guide, attributes are supposed to be vectors:

The current version treats all attributes as vectors; scalar values are treated as single-element vectors.

That suggests that, strictly speaking, the h5netcdf engine is right and the netcdf4 engine is wrong, and that 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.

 
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