---- filt2map.cc : computing map from a Alm coefficients, after filtering in (l,m) space ----
**JSkyMap** package Version tag= JSkyMap_Aug2020 (V= 1.7)
filt2map[0] : decoding arguments ...
filt2map/usage: filt2map [-options] InputFileName OutFileName
[-lmax ell_max] [-healpix nside] [-tphi nring]
[-gaussfilt sigma_ell]
[-flhigh lhigh,delta_lhigh] [-fllow llow,delta_llow] [-fmlow mlow]
[-inalm] [-intphi] [-noise NoiseLevelKelvin]
[-sharp] [-prt PrintLevel] [-noairg]
-lmax ell_max : define Lmax value for SHT
-healpix nside: set HEALPix nside pixelisation parameter for JSkyMap and beam computation (def=256 -> 13.75' resolution)
-tphi nring : select ThetaPhi pixelisation parameter nring for JSkyMap and beam computation (nring=900 -> 12' resolution)
-gaussfilt sigma_ell : Apply gaussian filter in (l,m) space with sigma_ell (default, sigma_ell=360)
-flhigh lhigh,delta_lhigh : define the low-pass filter parameters in ell-space
-fllow llow,delta_llow : define the high-pass filter parameters in ell-space
-fmlow mlow : define the low-threshold in m-space, put Alm to zero for m<=mlow if applicable
-inalm : Input is an file with Alm<double> spherical harmonics coefficients - A Spherical Map otherwise
-intphi : Input is an SphereThetaPhi<double> - defaut is HEALPix
-noise NoiseLevel : Add noise (gaussian/white) to the reconstructed map with sigma=NoiseLevel
-sharp : Use lib-sharp to compute beams in (l,m) space (-> requires Sophya/ISharp module)
NOT YET IMPLEMENTED in this program
-prt PrintLevel: specify print level
-noairg : Specify this flag to avoid random number generator Auto-initialisation
o InputFileName : input file containing the either the Alm coefficients, if -inalm specified
or a Spherical Map (HEALPix or SphereThetaPhi , .ppf or .fits)
PPF supported only for SphereThetaPhi Alm - (Alm file typically as produced by vis2map)
o OutFileName : output file name , for the reconstructed map (.ppf or .fits )
.ppf supported for SphereThetaPhi only
Reza ANSARI