issue_comments: 237997724

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https://github.com/pydata/xarray/pull/947#issuecomment-237997724 https://api.github.com/repos/pydata/xarray/issues/947 237997724 MDEyOklzc3VlQ29tbWVudDIzNzk5NzcyNA== 4160723 2016-08-06T01:15:02Z 2016-08-06T01:15:02Z MEMBER

In the example above, DataArray.level_1 now returns a DataArray object, although I haven't found another way than creating a new coordinates.DataArrayLevelCoordinates class for this.

I wasn't happy with the initial implementation of using levels in .sel, it really added too much complexity. I re-implemented it and now I find it much cleaner. However, it is not possible anymore to mix level indexers and non-dict dimension indexers, e.g., da.sel(x='a', level_2=1) doesn't work but da.sel(x={'level_1': 'a'}, level_2=1) does, which is already quite flexible though. 

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