issue_comments: 389939666

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https://github.com/pydata/xarray/pull/2152#issuecomment-389939666 https://api.github.com/repos/pydata/xarray/issues/2152 389939666 MDEyOklzc3VlQ29tbWVudDM4OTkzOTY2Ng== 1197350 2018-05-17T17:07:21Z 2018-05-17T17:07:21Z MEMBER

This seems like a good idea.

groupby_bins has a labels option, which can override the default labels generated by pandas. That's what is done in the (multidimensional groupby example](http://xarray.pydata.org/en/stable/examples/multidimensional-coords.html#multidimensional-groupby).

I wonder if it's worth just making this behavior the default, or generating an additional coordinate for the bin centers automatically.

 
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