issue_comments: 334125888

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https://github.com/pydata/xarray/issues/1603#issuecomment-334125888 https://api.github.com/repos/pydata/xarray/issues/1603 334125888 MDEyOklzc3VlQ29tbWVudDMzNDEyNTg4OA== 6815844 2017-10-04T11:25:14Z 2017-10-04T12:43:59Z MEMBER

@shoyer, could you add more details of this idea? I think I do not yet fully understand the practical difference between dim and index.

  1. Use cases of the independent Index and dims Would it be general cases where dimension and index are independent? (It is the case only for MultiIndex and KDtree)?

  2. MultiIndex implementation In MultiIndex case, will a xarray object store a MultiIndex object and also the level variables as Variable objects (there will be some duplicates)? If indexes[dim] returns multiple Variables, which realizes a MultiIndex-like structure without pd.MultiIndex, indexes would be very different from dim, because a single dimension can have multiple indexes.

 
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