HEALPix (Hierarchical Equal Area isoLatitude Pixelisation) is an algorithm for pixellizing a sphere that is sometimes used in Astronomy to store data from all-sky surveys, but the general algorithm can apply to any field that has to deal with representing data on a sphere.
More information about the HEALPix algorithm can be found here:
- https://healpix.jpl.nasa.gov/
- https://ui.adsabs.harvard.edu/abs/2005ApJ...622..759G
- https://ui.adsabs.harvard.edu/abs/2007MNRAS.381..865C
astropy-healpix is a new BSD-licensed implementation that is separate from the original GPL-licensed HEALPix library and associated healpy Python wrapper. See :ref:`about` for further information about the difference between this new implementation and the original libraries.
The code can be found on GitHub, along with the list of Contributors.
.. toctree:: :maxdepth: 1 installation getting_started coordinates boundaries cone_search interpolation performance healpy_compat api
For a list of changes in each version, see the CHANGES.rst file.