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Generate catalog MOC on search filters #378

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camposandro opened this issue Oct 15, 2024 · 0 comments

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camposandro commented Oct 15, 2024

If a catalog does not have a MOC and we perform a search on it the resulting catalog is also left without a MOC.

https://github.com/astronomy-commons/hipscat/blob/405bebed908fc79495a057163e1b95d5134b6fde/src/hipscat/catalog/healpix_dataset/healpix_dataset.py#L198-L200

We could generate it from the catalog's pixel tree and intersect it with the search MOC, similar to what we have for crossmatching:

https://github.com/astronomy-commons/hipscat/blob/405bebed908fc79495a057163e1b95d5134b6fde/src/hipscat/pixel_tree/pixel_alignment.py#L446-L447

delucchi-cmu added this to HATS / LSDB

camposandro mentioned this issue

Use Alignment moc in crossmatch/join operations astronomy-commons/lsdb#438

Merged

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