|Available forms||Forward and inverse, spherical and elliptical projection|
|Implemented by||Alex Raichev and Michael Speth|
|+north_square||Position of the north polar square. Valid inputs are 0–3. Defaults to 0.|
|+south_square||Position of the south polar square. Valid inputs are 0–3. Defaults to 0.|
rHEALPix is a projection based on the HEALPix projection. The implementation of rHEALPix uses the HEALPix projection. The rHEALPix combines the peaks of the HEALPix into a square. The square’s position can be translated and rotated across the x-axis which is a noval approach for the rHEALPix projection. The initial intention of using rHEALPix in the Spatial Computation Engine Science Collaboration Environment (SCENZGrid).
To run a rHEALPix projection on a WGS84 ellipsoidal model, use the following command:
proj +proj=rhealpix -f '%.2f' +ellps=WGS84 +south_square=0 +north_square=2 -E << EOF > 55 12 > EOF 55 12 6115727.86 1553840.13