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https://github.com/pydata/xarray/issues/1603#issuecomment-523240818 https://api.github.com/repos/pydata/xarray/issues/1603 523240818 MDEyOklzc3VlQ29tbWVudDUyMzI0MDgxOA== 1217238 2019-08-21T00:00:43Z 2021-03-03T16:46:25Z MEMBER

Explicitly propagating indexes requires going through most of xarray's source code and auditing each time we create a Dataset or DataArray object with low-level operations. We have some pretty decent testing functions for this in the form of xarray.testing._assert_internal_invariants, so this is now a pretty mechanical process -- you know it's working if you're now setting indexes explicitly and xarray's test suite passes.

Here's our current progress: - [x] most of dataset.py - [x] alignment.py - [x] merge.py (#3234) - [ ] concat.py - [x] dataarray.py (#3519, #3481) - [ ] computation.py - [ ] groupby.py - [ ] resample.py - [ ] rolling.py - [ ] everything else!

 
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