HEALpix: where are the equal areas ??
Posted: October 21 2004
Hi,
If there are some persons specialized in HEALpix on this forum, can somebody explain me why this "Hierarchical Equal Area isoLatitude Pixelisation" contains the two words "Equal Area" ?
IMHO, there is no truly equal area in this grid, excepted if you define a new definition of area on the sphere, as it is defined in the HEALpix original paper, i.e.
Dz * Dphi !
For me, this equal area concept is just a rough approximation. What do you think ?
Best,
Laurent.
If there are some persons specialized in HEALpix on this forum, can somebody explain me why this "Hierarchical Equal Area isoLatitude Pixelisation" contains the two words "Equal Area" ?
IMHO, there is no truly equal area in this grid, excepted if you define a new definition of area on the sphere, as it is defined in the HEALpix original paper, i.e.
Dz * Dphi !
For me, this equal area concept is just a rough approximation. What do you think ?
Best,
Laurent.