python-healpy

Python library to handle pixelated data on the sphere based on HEALPix

healpy is a Python package to handle pixelated data on the sphere. It is based on the Hierarchical Equal Area isoLatitude Pixelization (HEALPix) scheme and bundles the HEALPix C++ library. healpy provides utilities to: * convert between sky coordinates and pixel indices in HEALPix nested and ring schemes * find pixels within a disk, a polygon or a strip in the sky * apply coordinate transformations between Galactic, Ecliptic and Equatorial reference frames * apply custom rotations either to vectors or full maps * read and write HEALPix maps to disk in FITS format * upgrade and downgrade the resolution of existing HEALPix maps * visualize maps in Mollweide, Gnomonic and Cartographic projections * transform maps to Spherical Harmonics space and back using multi-threaded C++ routines * compute Auto and Cross Power Spectra from maps and create map realizations from spectra