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129 lines
4 KiB
C++
129 lines
4 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 "powspec.h"
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#include "powspec_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 anafast_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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string infile = params.template find<string>("infile");
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string outfile = params.template find<string>("outfile","");
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string outfile_alms = params.template find<string>("outfile_alms","");
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planck_assert ((outfile!="") || (outfile_alms!=""),
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"no output specified, nothing done");
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bool polarisation = params.template find<bool>("polarisation");
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int num_iter = params.template find<int>("iter_order",0);
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if (!polarisation)
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{
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Healpix_Map<T> map;
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read_Healpix_map_from_fits(infile,map,1,2);
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arr<double> weight;
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get_ring_weights (params,map.Nside(),weight);
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Alm<xcomplex<T> > alm(nlmax,nmmax);
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double avg=map.average();
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map.Add(T(-avg));
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if (map.Scheme()==NEST) map.swap_scheme();
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map2alm_iter(map,alm,num_iter,weight);
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alm(0,0) += T(avg*sqrt(fourpi));
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if (outfile!="")
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{
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PowSpec powspec;
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extract_powspec (alm,powspec);
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write_powspec_to_fits (outfile,powspec,1);
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}
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if (outfile_alms!="")
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write_Alm_to_fits(outfile_alms,alm,nlmax,nmmax,planckType<T>());
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}
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else
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{
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Healpix_Map<T> mapT, mapQ, mapU;
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read_Healpix_map_from_fits(infile,mapT,mapQ,mapU,2);
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arr<double> weight;
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get_ring_weights (params,mapT.Nside(),weight);
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Alm<xcomplex<T> > almT(nlmax,nmmax), almG(nlmax,nmmax), almC(nlmax,nmmax);
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double avg=mapT.average();
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mapT.Add(T(-avg));
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if (mapT.Scheme()==NEST) mapT.swap_scheme();
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if (mapQ.Scheme()==NEST) mapQ.swap_scheme();
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if (mapU.Scheme()==NEST) mapU.swap_scheme();
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map2alm_pol_iter
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(mapT,mapQ,mapU,almT,almG,almC,num_iter,weight);
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almT(0,0) += T(avg*sqrt(fourpi));
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if (outfile!="")
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{
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PowSpec powspec;
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extract_powspec (almT,almG,almC,powspec);
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params.template find<bool>("full_powerspectrum",false) ?
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write_powspec_to_fits (outfile,powspec,6) :
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write_powspec_to_fits (outfile,powspec,4);
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}
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if (outfile_alms!="")
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write_Alm_to_fits (outfile_alms,almT,almG,almC,nlmax,nmmax,planckType<T>());
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}
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}
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} // unamed namespace
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int anafast_cxx_module (int argc, const char **argv)
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{
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module_startup ("anafast_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 ? anafast_cxx<double>(params) : anafast_cxx<float>(params);
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return 0;
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}
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