Img 2Pad

Display image in canvas and pad.

Author: Valeriy Onuchin
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, February 25, 2020 at 02:11 AM.

In [1]:
TImage *img = TImage::Open("$ROOTSYS/tutorials/image/rose512.jpg");
if (!img) {
   printf("Could not create an image... exit\n");
   return;
}
img->SetConstRatio(kFALSE);
img->Draw("N");

TCanvas *c = (TCanvas *)gROOT->GetListOfCanvases()->FindObject("rose512jpg");
c->SetFixedAspectRatio();

TCanvas *c1 = new TCanvas("roses", "roses", 800, 800);
img->Draw("T100,100,#ffff00");
/*img->Draw("T100,100,#556655");*/
/*img->Draw("T100,100");*/

TImage *i1 = TImage::Open("$ROOTSYS/tutorials/image/rose512.jpg");
i1->SetConstRatio(kFALSE);
i1->Flip(90);
TImage *i2 = TImage::Open("$ROOTSYS/tutorials/image/rose512.jpg");
i2->SetConstRatio(kFALSE);
i2->Flip(180);
TImage *i3 = TImage::Open("$ROOTSYS/tutorials/image/rose512.jpg");
i3->SetConstRatio(kFALSE);
i3->Flip(270);
TImage *i4 = TImage::Open("$ROOTSYS/tutorials/image/rose512.jpg");
i4->SetConstRatio(kFALSE);
i4->Mirror(kTRUE);

float d = 0.40;
TPad *p1 = new TPad("i1", "i1", 0.05, 0.55, 0.05+d*i1->GetWidth()/i1->GetHeight(), 0.95);
TPad *p2 = new TPad("i2", "i2", 0.55, 0.55, 0.95, 0.55+d*i2->GetHeight()/i2->GetWidth());
TPad *p3 = new TPad("i3", "i3", 0.55, 0.05, 0.55+d*i3->GetWidth()/i3->GetHeight(), 0.45);
TPad *p4 = new TPad("i4", "i4", 0.05, 0.05, 0.45, 0.05+d*i4->GetHeight()/i4->GetWidth());

p1->Draw();
p1->cd();
i1->Draw();
c1->cd();

p2->Draw();
p2->cd();
i2->Draw();
c1->cd();

p3->Draw();
p3->cd();
i3->Draw();
c1->cd();

p4->Draw();
p4->cd();
i4->Draw();
c1->cd();

Draw all canvases

In [2]:
gROOT->GetListOfCanvases()->Draw()