issue_comments: 335282551

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https://github.com/pydata/xarray/issues/1613#issuecomment-335282551 https://api.github.com/repos/pydata/xarray/issues/1613 335282551 MDEyOklzc3VlQ29tbWVudDMzNTI4MjU1MQ== 1217238 2017-10-09T20:48:46Z 2017-10-09T20:48:46Z MEMBER

This was actually intentional, though you are certainly not the first person to complain about this.

Xarray's behavior mirrors pandas. The justification for this logic is that sel/loc would work like normal indexing [] on a Python list, and if you supply slice limits in the opposite order on a Python list, you get an empty result.

Probably the cleanest solution possible would be a separate selection object for xarray that doesn't care about order, e.g., da.sel(x=xarray.Between(10, 50)).

 
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