issue_comments: 873179375

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https://github.com/pydata/xarray/issues/4118#issuecomment-873179375 https://api.github.com/repos/pydata/xarray/issues/4118 873179375 MDEyOklzc3VlQ29tbWVudDg3MzE3OTM3NQ== 35968931 2021-07-02T18:22:49Z 2021-07-02T18:22:49Z MEMBER

Flagging another possible use case, this time in Magnetic Confinement Fusion: representing the IMAS data model.

IMAS is currently closed-source (being part of the ITER project), but there is a big push to make it open-source and the standard data model for tokamak plasma data.

I'm not very familiar with IMAS (@smithsp and @orso82 are more so), but it is hierarchical. There is some more information in appendix A3 of this paper, which talks about "taking advantage of the homogeneity of grid sizes that is commonly found across arrays of structures", which sounds very closely related to the DataTree proposal.

This might allow the xarray.DataTree to do more of the heavy-lifting within OMAS (which already uses xarray, and is intended to be compatible with IMAS).

 
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