Thstack 2Palettecolor

Palette coloring for 2D histograms' stack is activated thanks to the option PFC (Palette Fill Color). When this option is given to THStack::Draw the histograms in the THStack get their color from the current color palette defined by gStyle->SetPalette(...). The color is determined according to the number of histograms.

In this example four 2D histograms are displayed with palette coloring. The color of each graph is picked inside the palette number 1.

Author: Olivier Couet
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Thursday, May 19, 2022 at 08:17 AM.

In [1]:
gStyle->SetPalette(1);
auto h1 = new TH2F("h1","h1",20,0,6,20,-4,4);
auto h2 = new TH2F("h2","h1",20,0,6,20,-4,4);
auto h3 = new TH2F("h3","h1",20,0,6,20,-4,4);
auto h4 = new TH2F("h4","h1",20,0,6,20,-4,4);
auto h5 = new TH2F("h5","h1",20,0,6,20,-4,4);
h2->Fill(2.,0.,5);
h3->Fill(3.,0.,10);
h4->Fill(4.,0.,15);
h5->Fill(5.,0.,20);
auto hs = new THStack("hs","Test of palette colored lego stack");
hs->Add(h1);
hs->Add(h2);
hs->Add(h3);
hs->Add(h4);
hs->Add(h5);
hs->Draw("0lego1 PFC");
Info in <TCanvas::MakeDefCanvas>:  created default TCanvas with name c1

Draw all canvases

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