issue_comments: 822122172

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https://github.com/pydata/xarray/issues/1603#issuecomment-822122172 https://api.github.com/repos/pydata/xarray/issues/1603 822122172 MDEyOklzc3VlQ29tbWVudDgyMjEyMjE3Mg== 1200058 2021-04-19T02:18:58Z 2021-04-19T02:19:24Z NONE

Many array types do have implicit indices. For example, sparse arrays do have their coordinates / CSR representation as primary index (.sel()) while dense array's primary index is the position (.isel()). Every labeled dimension is therefore just a separate mapping of a string to the index position in the array.

Going one step further, one could have continuous dimensions where positional indexing (.isel()) does not really make sense. Looking at TileDB's dimensions provides an example for this.

=> Having explicit and implicit indices on arrays would be awesome, even if they don't support all xarray features!

 
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