cdshealpix 0.6.3

Python cdshealpix package wrapping code of the cdshealpix crate

CDSHealpix

This is a BSD-licensed HEALPix package which is wrapped around the cdshealpix Rust crate.

cdshealpix is multi-platform and is currently deployed on PyPI for i686 and x86_64 archs.

It is compatible with Python 3.8 to 3.11

• phyton dependencies are numpy and astropy
• astropy v5.1 does not seem to be compatible with python 3.7 this page
• astropy requieres numpy>=1.18 according to this page

pip install cdshealpix

Or

conda install -c conda-forge cdshealpix

Reminder on conda activation/deactivation:

conda config --set auto_activate_base false
conda activate base
conda deactivate

Test:

import cdshealpix
from cdshealpix import healpix_to_lonlat
lon, lat = healpix_to_lonlat(0, 0)
assert lon.rad[0] == 0.7853981633974483

Features

• Nested and Ring HEALPix notation supported
• Cone search
• Elliptical-Cone search
• Polygon search
• Bilinear interpolation
• lonlat_to_healpix and healpix_to_lonlat supports numpy broadcasting
• Rust allows easy concurrency. A num_threads optional parameter can be used to allow parallelism. By default, concurrency is disabled.
• Get the world vertices corresponding to an HEALPix cell
• Get the neighbours of an HEALPix cell

Documentation

Here is the link to the documentation for informations about how to use this package.