HEALPix

 (en.wikipedia.org)

20 points | by hyperific 3 hours ago

3 comments

  • ahurmazda 10 minutes ago
    I recall when I first saw Ubers’s H3[1], it really reminded me of healpix (from grad school). I know the algorithm is different but similar problem space: “given a point on a sphere, assign it to a stable cell ID”

    1. https://www.uber.com/us/en/blog/h3/

  • kmaitreys 34 minutes ago
    I used healpy[1] once during my undergraduate years. It was a summer project to develop an algorithm to find void galaxies.

    [1]: https://healpy.readthedocs.io/en/latest/

  • sligbad 1 hour ago
    Love the HEALPix scheme, super useful for indexing too (some similar characteristics to geohashes).