npix_to_nside¶
-
cygrid.
npix_to_nside
(uint64_t npix) → uint64_t¶ Compute HEALPix
nside
fromnpix
.- Parameters
- npixuint64_t
HEALPix
npix
parameter.
- Raises
- ValueError
Invalid value for
npix
.
Notes
This function was adapted from the HEALPix C++ library. (Copyright (C) 2003-2012 Max-Planck-Society; author Martin Reinecke; see http://healpix.sourceforge.net)