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Reference Guide
FITS_tutorial3.C File Reference

Detailed Description

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Open a FITS file and retrieve the first plane of the image array as a TImage object.

void FITS_tutorial3()
// We open a FITS file that contains several image
// extensions. The primary HDU contains no data.
// Data copyright: NASA
// Open extensions 1 to 5 from file
TString dir = gROOT->GetTutorialDir();
auto c = new TCanvas("c1", "FITS tutorial #1", 800, 700);
c->Divide(2, 3);
for (auto i : ROOT::TSeqI(1, 6)) {
TFITSHDU hdu(dir + "/fitsio/sample3.fits", i);
std::unique_ptr<TImage> im(hdu.ReadAsImage(0));
Claudi Martinez

Definition in file FITS_tutorial3.C.