ROOT
v6-24
Reference Guide
FITS_tutorial6.C
Go to the documentation of this file.
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/// \file
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/// \ingroup tutorial_FITS
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/// \notebook
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/// Open a FITS file whose primary array represents
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/// a spectrum table (flux vs wavelength) and dump its columns
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///
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/// \macro_code
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/// \macro_output
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///
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/// \author Claudi Martinez
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void
FITS_tutorial6()
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{
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// We open a table from a FITS file
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// and dump its columns.
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TString
dir =
gROOT
->GetTutorialDir();
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//Open the table
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TFITSHDU
hdu(dir +
"/fitsio/sample4.fits[1]"
);
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// Show columns
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const
auto
nColumns = hdu.GetTabNColumns();
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printf(
"The table has %d columns:\n"
, nColumns);
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for
(
auto
i :
ROOT::TSeqI
(nColumns)) {
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printf(
" - Column %d: %s\n"
, i, hdu.GetColumnName(i).Data());
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}
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}
gROOT
#define gROOT
Definition:
TROOT.h:406
ROOT::TSeq
A pseudo container class which is a generator of indices.
Definition:
TSeq.hxx:66
TFITSHDU
FITS file interface class.
Definition:
TFITS.h:35
TString
Basic string class.
Definition:
TString.h:136
tutorials
fitsio
FITS_tutorial6.C
ROOT v6-24 - Reference Guide Generated on Fri Jan 27 2023 03:32:33 (GVA Time) using Doxygen 1.9.5