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Imported healpix tree

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Guilhem Lavaux 2012-10-30 13:56:48 -04:00
parent 4182c30485
commit 4bfb62f177
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external/healpix/Healpix_cxx/mult_alm_module.cc vendored Normal file
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/*
* This file is part of Healpix_cxx.
*
* Healpix_cxx is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Healpix_cxx is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Healpix_cxx; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* For more information about HEALPix, see http://healpix.jpl.nasa.gov
*/
/*
* Healpix_cxx is being developed at the Max-Planck-Institut fuer Astrophysik
* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
* (DLR).
*/
/*
* Copyright (C) 2003-2010 Max-Planck-Society
* Author: Martin Reinecke
*/
#include "xcomplex.h"
#include "cxxutils.h"
#include "paramfile.h"
#include "healpix_data_io.h"
#include "alm.h"
#include "alm_fitsio.h"
#include "alm_powspec_tools.h"
#include "fitshandle.h"
#include "levels_facilities.h"
#include "lsconstants.h"
using namespace std;
namespace {
template<typename T> void mult_alm (paramfile &params)
{
string infile = params.template find<string>("infile");
string outfile = params.template find<string>("outfile");
int nside_pixwin_in = params.template find<int>("nside_pixwin_in",0);
planck_assert (nside_pixwin_in>=0,"nside_pixwin_in must be >= 0");
int nside_pixwin_out = params.template find<int>("nside_pixwin_out",0);
planck_assert (nside_pixwin_out>=0,"nside_pixwin_out must be >= 0");
double fwhm_in = arcmin2rad*params.template find<double>("fwhm_arcmin_in",0);
planck_assert (fwhm_in>=0,"fwhm_arcmin_in must be >= 0");
double fwhm_out = arcmin2rad*params.template find<double>("fwhm_arcmin_out",0);
planck_assert (fwhm_out>=0,"fwhm_arcmin_out must be >= 0");
string datadir;
if ((nside_pixwin_in>0) || (nside_pixwin_out>0))
datadir = params.template find<string>("healpix_data");
bool polarisation = params.template find<bool>("polarisation");
if (!polarisation)
{
int nlmax, nmmax;
get_almsize(infile, nlmax, nmmax, 2);
Alm<xcomplex<T> > alm;
read_Alm_from_fits(infile,alm,nlmax,nmmax,2);
if (fwhm_in>0) smoothWithGauss (alm, -fwhm_in);
arr<double> temp(nlmax+1);
if (nside_pixwin_in>0)
{
read_pixwin(datadir,nside_pixwin_in,temp);
for (int l=0; l<=nlmax; ++l)
temp[l] = 1/temp[l];
alm.ScaleL (temp);
}
if (nside_pixwin_out>0)
{
read_pixwin(datadir,nside_pixwin_out,temp);
alm.ScaleL (temp);
}
if (fwhm_out>0) smoothWithGauss (alm, fwhm_out);
write_Alm_to_fits (outfile,alm,nlmax,nmmax,planckType<T>());
}
else
{
int nlmax, nmmax;
get_almsize_pol(infile, nlmax, nmmax);
Alm<xcomplex<T> > almT, almG, almC;
read_Alm_from_fits(infile,almT,almG,almC,nlmax,nmmax,2);
if (fwhm_in>0) smoothWithGauss (almT, almG, almC, -fwhm_in);
arr<double> temp(nlmax+1), pol(nlmax+1);
if (nside_pixwin_in>0)
{
read_pixwin(datadir,nside_pixwin_in,temp,pol);
for (int l=0; l<=nlmax; ++l)
{ temp[l] = 1/temp[l]; pol[l] = 1/pol[l]; }
almT.ScaleL(temp); almG.ScaleL(pol); almC.ScaleL(pol);
}
if (nside_pixwin_out>0)
{
read_pixwin(datadir,nside_pixwin_out,temp,pol);
almT.ScaleL(temp); almG.ScaleL(pol); almC.ScaleL(pol);
}
if (fwhm_out>0) smoothWithGauss (almT, almG, almC, fwhm_out);
write_Alm_to_fits (outfile,almT,almG,almC,nlmax,nmmax,planckType<T>());
}
}
} // unnamed namespace
int mult_alm_module (int argc, const char **argv)
{
module_startup ("mult_alm", argc, argv, 2, "<parameter file>");
paramfile params (argv[1]);
bool dp = params.find<bool> ("double_precision",false);
dp ? mult_alm<double>(params) : mult_alm<float>(params);
return 0;
}