issue_comments: 697928722

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https://github.com/pydata/xarray/issues/4452#issuecomment-697928722 https://api.github.com/repos/pydata/xarray/issues/4452 697928722 MDEyOklzc3VlQ29tbWVudDY5NzkyODcyMg== 1217238 2020-09-23T19:34:48Z 2020-09-23T19:34:48Z MEMBER

I agree that there's is no good reason to use concat_characters for zarr, which supports normal fixed-width string datatypes.

For netCDF, we do need concat_character for the "NC_CHAR" dtype, which is used to store strings in lieu of a true fixed width string dtype. It's ugly, but otherwise we won't be able to round-trip string dtype arrays from xarray into netCDF3 files. This note from NetCDF.jl does a nice job of explaining.

 
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