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125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/*
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* This file is part of Healpix_cxx.
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*
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* Healpix_cxx is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Healpix_cxx is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Healpix_cxx; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* For more information about HEALPix, see http://healpix.jpl.nasa.gov
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*/
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/*
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* Healpix_cxx is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/*
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* Copyright (C) 2003-2010 Max-Planck-Society
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* Author: Martin Reinecke
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*/
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#include "xcomplex.h"
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#include "cxxutils.h"
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#include "paramfile.h"
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#include "healpix_data_io.h"
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#include "alm.h"
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#include "alm_fitsio.h"
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#include "healpix_map.h"
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#include "healpix_map_fitsio.h"
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#include "alm_healpix_tools.h"
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#include "alm_powspec_tools.h"
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#include "fitshandle.h"
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#include "levels_facilities.h"
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#include "lsconstants.h"
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using namespace std;
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namespace {
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template<typename T> void alm2map_cxx (paramfile ¶ms)
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{
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int nlmax = params.template find<int>("nlmax");
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int nmmax = params.template find<int>("nmmax",nlmax);
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planck_assert(nmmax<=nlmax,"nmmax must not be larger than nlmax");
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string infile = params.template find<string>("infile");
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string outfile = params.template find<string>("outfile");
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int nside = params.template find<int>("nside");
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double fwhm = arcmin2rad*params.template find<double>("fwhm_arcmin",0);
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arr<double> temp, pol;
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get_pixwin (params,nlmax,nside,temp,pol);
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bool deriv = params.template find<bool>("derivatives",false);
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if (deriv)
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{
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Alm<xcomplex<T> > alm;
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read_Alm_from_fits(infile,alm,nlmax,nmmax,2);
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if (fwhm>0) smoothWithGauss (alm, fwhm);
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Healpix_Map<T> map(nside,RING,SET_NSIDE),
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mapdth(nside,RING,SET_NSIDE),
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mapdph(nside,RING,SET_NSIDE);
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alm.ScaleL(temp);
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double offset = alm(0,0).real()/sqrt(fourpi);
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alm(0,0) = 0;
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alm2map_der1(alm,map,mapdth,mapdph);
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map.Add(T(offset));
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write_Healpix_map_to_fits (outfile,map,mapdth,mapdph,planckType<T>());
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return;
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}
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bool polarisation = params.template find<bool>("polarisation");
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if (!polarisation)
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{
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Alm<xcomplex<T> > alm;
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read_Alm_from_fits(infile,alm,nlmax,nmmax,2);
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if (fwhm>0) smoothWithGauss (alm, fwhm);
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Healpix_Map<T> map(nside,RING,SET_NSIDE);
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alm.ScaleL(temp);
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double offset = alm(0,0).real()/sqrt(fourpi);
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alm(0,0) = 0;
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alm2map(alm,map);
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map.Add(T(offset));
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write_Healpix_map_to_fits (outfile,map,planckType<T>());
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}
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else
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{
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Alm<xcomplex<T> > almT, almG, almC;
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read_Alm_from_fits(infile,almT,almG,almC,nlmax,nmmax,2);
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if (fwhm>0) smoothWithGauss (almT, almG, almC, fwhm);
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Healpix_Map<T> mapT(nside,RING,SET_NSIDE), mapQ(nside,RING,SET_NSIDE),
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mapU(nside,RING,SET_NSIDE);
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almT.ScaleL(temp);
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almG.ScaleL(pol); almC.ScaleL(pol);
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double offset = almT(0,0).real()/sqrt(fourpi);
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almT(0,0) = 0;
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alm2map_pol(almT,almG,almC,mapT,mapQ,mapU);
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mapT.Add(T(offset));
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write_Healpix_map_to_fits (outfile,mapT,mapQ,mapU,planckType<T>());
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}
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}
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} // unnamed namespace
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int alm2map_cxx_module (int argc, const char **argv)
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{
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module_startup ("alm2map_cxx", argc, argv, 2, "<parameter file>");
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paramfile params (argv[1]);
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bool dp = params.find<bool> ("double_precision",false);
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dp ? alm2map_cxx<double>(params) : alm2map_cxx<float>(params);
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return 0;
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}
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