issue_comments: 185796850

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https://github.com/pydata/xarray/issues/767#issuecomment-185796850 https://api.github.com/repos/pydata/xarray/issues/767 185796850 MDEyOklzc3VlQ29tbWVudDE4NTc5Njg1MA== 1217238 2016-02-18T16:16:00Z 2016-02-18T16:16:00Z MEMBER

This is a really good point that honestly I had not thought carefully about before. I agree that it would be very nice to have this behavior, though. This will require a bit of internal refactoring to pass on the level information to the MultiIndex during indexing.

To remove unused levels after unstacking, you need to add an explicit dropna, e.g., da.unstack('band_wavenumber').dropna('band_wavenumber'). This is definitely a break from pandas, but for a good reason (IMO). See here for discussion on this point.

I raised another issue for the bug related to copying MultiIndex that you had in the earlier version of this PR (#769).

More broadly, if you care about MultiIndex support, it would be great to get some help pushing it. I'm happy to answer questions, but I'm at a new job and don't have a lot of time to work on new development.

 
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