Bug report DrawClone!

[cxwx1]

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ROOT Version: 6.20.04
Platform: mac OS X 10.15
Compiler: Not Provided

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tutorial fitsio/FITS_tutorial3.C

new method

         std::unique_ptr<TImage> im(hdu.ReadAsImage(0));
         c2->cd(i);
         im->DrawClone();

bug!
snap|588x500
the TCanvas::cd() not the right way!
It seems this method draw image on global pad c2->cd() not on sub pad

old method
OK

TImage* im = hdu.ReadAsImage(0);
cd->cd(i);
im->Draw()

[cxwx1]

should I open a issue of this on github repo?

[eguiraud]

Hi,
thanks for the report, we collect bug reports at https://sft.its.cern.ch/jira/projects/ROOT , it would be great if you could report there too.

Cheers,
Enrico

[Wile_E_Coyote]

As explained by @couet … this is not a bug.

Adding TLatex text to different pads of same canvas

The TObject::DrawClone functionality was initially made to be used interactively to Draw an Object in the interactively selected pad (see the code). The right way will be the following (But that’s quite heavy. Using Draw() is much better seems to me)… void evdv1() { auto c = new TCanvas(); c->Divide(2,2); c->cd(1); gPad->DrawFrame(0.,0.,40.,2.); c->cd(2); gPad->DrawFrame(0.,0.,60.,2.); c->cd(3); gPad->DrawFrame(0.,0.,60.,2.); gROOT->SetSelectedPad(c->cd(1)); auto text1 =…

[cxwx1]

That is correct, I would made a pr on GitHub for tutorials.