issue_comments: 290130241

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https://github.com/pydata/xarray/issues/1092#issuecomment-290130241 https://api.github.com/repos/pydata/xarray/issues/1092 290130241 MDEyOklzc3VlQ29tbWVudDI5MDEzMDI0MQ== 4160723 2017-03-29T15:38:46Z 2017-03-29T15:38:46Z MEMBER

@darothen you might be interested by the discussion we had here, although it doesn't solve anything related to selection across similar Dataset objects.

I think that the collection of Dataset objects with like-dimensions that you suggest is indeed different than the tree-like structure within a dataset that is proposed here (the latter still using a unique set of dimensions and coordinates).

Both approaches may co-exist, though. I can imagine the case where we have (1) a set of, e.g., grid-search or monte-carlo model runs and (2) for each model run we have diagnostic variables defined in different places on the grid (e.g., nodes, edges...). The tuple-defined groups within a Dataset is useful for 2 and the collection of Dataset objects is useful for 1.

As pointed out by @shoyer, such a collection of Dataset objects might be (preferably) implemented outside of xarray.

 
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