Logo ROOT   6.12/07
Reference Guide
ratioplot3.C File Reference

Detailed Description

View in nbviewer Open in SWAN Example which shows how you can get the graph of the lower plot and set the y axis range for it.

Since the lower plot is not created until TRatioPlot::Draw is called, you can only use the method afterwards.

pict1_ratioplot3.C.png
void ratioplot3() {
auto c1 = new TCanvas("c1", "fit residual simple");
c1->SetLogy();
auto h1 = new TH1D("h1", "h1", 50, -5, 5);
h1->FillRandom("gaus", 2000);
h1->Fit("gaus");
h1->SetMinimum(0.001);
h1->GetXaxis()->SetTitle("x");
h1->GetYaxis()->SetTitle("y");
c1->Clear();
auto rp1 = new TRatioPlot(h1);
rp1->Draw();
rp1->GetLowerRefGraph()->SetMinimum(-2);
rp1->GetLowerRefGraph()->SetMaximum(2);
c1->Update();
}
Author
Paul Gessinger

Definition in file ratioplot3.C.