The HEALPix tool family
A coherent open-source stack to index, resample, analyse, plot and visualize Earth Observation and climate data on a common HEALPix Discrete Global Grid System — all with WGS84 ellipsoidal support.
These tools share one principle: a single equal-area grid for Copernicus and Destination Earth data. healpix-geo provides the core coordinate algorithms on the WGS84 ellipsoid; the others build on it for resampling, analysis, plotting and 3D visualization. Each links straight to its own documentation.
grid4earth
The meta-package — “pip install grid4earth” installs the whole stack at once: healpix-geo, -resample, -analyse and -plot.
healpix-geo
Core HEALPix coordinate algorithms for the geosciences, on the WGS84 ellipsoid. The foundation the rest of the stack builds on.
healpix-resample
Regrid (lon, lat) data onto a HEALPix grid with GPU-accelerated sparse operators — nearest-neighbour and PSF interpolation.
healpix-analyse
A differentiable PyTorch toolkit for analysing signals on HEALPix grids — spherical harmonics, gauge-equivariant convolution, multi-resolution.
healpix-plot
Fast, practical static plots of HEALPix data with matplotlib and cartopy, with WGS84 ellipsoidal support.
Viewers & integrations
Third-party tools that GRID4EARTH extends with HEALPix-ellipsoid support, so DGGS data works in the wider ecosystem.
xdggs
An Xarray extension for Discrete Global Grid Systems — index, select and aggregate labelled data on HEALPix, H3 and more.
Developed by the Xarray community — GRID4EARTH contributes HEALPix-ellipsoid support.
GridLook
A WebGL 3D globe viewer for HEALPix / DGGS Earth-system data — runs in the browser, loads any public Zarr dataset.
Developed by external partners — GRID4EARTH added HEALPix-ellipsoid support.