Add stages to interact with healpix maps and generating random coordinates - Githubissues

LSSTDESC / rail_astro_tools

Rail utility stages that depend on astronomy package such as healpy, astropy etc...

MIT License

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Add stages to interact with healpix maps and generating random coordinates #47

Open jlvdb opened 2 months ago

jlvdb commented 2 months ago

Feature request

Implement stages that implement

healpix map arithmetic
masking of catalogs based on coordinates
healpix map creation based on coordinates and given nside resolution
generating uniform randoms in RA/Dec limits
generating uniform randoms efficiently on a healpix map (discrete randoms, draw random pixel center coordinates at maximum resolution of 536.870.912)
resampling healpix maps to different resolutions