alm2map_der1(alm, nside, lmax=None, mmax=None)¶
Computes a Healpix map and its first derivatives given the alm.
The alm are given as a complex array. You can specify lmax and mmax, or they will be computed from array size (assuming lmax==mmax).
- almarray, complex
A complex array of alm. Size must be of the form mmax(lmax-mmax+1)/2+lmax
The nside of the output map.
- lmaxNone or int, optional
Explicitly define lmax (needed if mmax!=lmax)
- mmaxNone or int, optional
Explicitly define mmax (needed if mmax!=lmax)
- m, d_theta, d_phituple of arrays
The maps correponding to alm, and its derivatives with respect to theta and phi. d_phi is already divided by sin(theta)