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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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113
external/healpix/Healpix_cxx/powspec_fitsio.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 "powspec_fitsio.h"
#include "powspec.h"
#include "fitshandle.h"
using namespace std;
void read_powspec_from_fits (const string &infile, PowSpec &powspec,
int nspecs, int lmax)
{
planck_assert ((nspecs==1)||(nspecs==4)||(nspecs==6),
"wrong number of spectra");
fitshandle inp;
inp.open(infile);
inp.goto_hdu(2);
arr<double> tt(lmax+1,0),gg(lmax+1,0),cc(lmax+1,0),tg(lmax+1,0),
tc(lmax+1,0),gc(lmax+1,0);
int lmax_file = safe_cast<int>(inp.nelems(1)-1);
if (lmax_file<lmax)
cerr << "warning: lmax in file smaller than expected; padding with 0."
<< endl;
int lmax_read = min (lmax,lmax_file);
inp.read_column_raw (1,&tt[0],lmax_read+1);
if (nspecs>=4)
{
inp.read_column_raw (2,&gg[0],lmax_read+1);
inp.read_column_raw (3,&cc[0],lmax_read+1);
inp.read_column_raw (4,&tg[0],lmax_read+1);
}
if (nspecs==6)
{
inp.read_column_raw (5,&tc[0],lmax_read+1);
inp.read_column_raw (6,&gc[0],lmax_read+1);
}
if (nspecs==1) powspec.Set(tt);
if (nspecs==4) powspec.Set(tt,gg,cc,tg);
if (nspecs==6) powspec.Set(tt,gg,cc,tg,tc,gc);
}
void write_powspec_to_fits (fitshandle &out,
const PowSpec &powspec, int nspecs)
{
planck_assert ((nspecs==1)||(nspecs==4)||(nspecs==6),
"incorrect number of spectra");
vector<fitscolumn> cols;
cols.push_back(fitscolumn("Temperature C_l","unknown",1,PLANCK_FLOAT64));
if (nspecs>1)
{
cols.push_back(fitscolumn("E-mode C_l","unknown",1,PLANCK_FLOAT64));
cols.push_back(fitscolumn("B-mode C_l","unknown",1,PLANCK_FLOAT64));
cols.push_back(fitscolumn("T-E cross-corr.","unknown",1,
PLANCK_FLOAT64));
}
if (nspecs>4)
{
cols.push_back(fitscolumn("T-B cross-corr.","unknown",1,PLANCK_FLOAT64));
cols.push_back(fitscolumn("E-B cross-corr.","unknown",1,PLANCK_FLOAT64));
}
out.insert_bintab(cols);
out.write_column(1,powspec.tt());
if (nspecs>1)
{
out.write_column(2,powspec.gg());
out.write_column(3,powspec.cc());
out.write_column(4,powspec.tg());
}
if (nspecs>4)
{
out.write_column(5,powspec.tc());
out.write_column(6,powspec.gc());
}
}
void write_powspec_to_fits (const string &outfile,
const PowSpec &powspec, int nspecs)
{
fitshandle out;
out.create(outfile);
write_powspec_to_fits(out,powspec,nspecs);
}