Logo ROOT   6.08/07
Reference Guide
ratioplot4.C File Reference

Detailed Description

View in nbviewer Open in SWAN Example that shows custom dashed lines on the lower plot, specified by a vector of floats.

By default, dashed lines are drawn at certain points. You can either disable them, or specify where you want them to appear.

pict1_ratioplot4.C.png
void ratioplot4() {
auto c1 = new TCanvas("c1", "fit residual simple");
auto h1 = new TH1D("h1", "h1", 50, -5, 5);
h1->FillRandom("gaus", 2000);
h1->Fit("gaus");
h1->GetXaxis()->SetTitle("x");
h1->GetYaxis()->SetTitle("y");
c1->Clear();
auto rp1 = new TRatioPlot(h1);
std::vector<double> lines = {-3, -2, -1, 0, 1, 2, 3};
rp1->SetGridlines(lines);
rp1->Draw();
rp1->GetLowerRefGraph()->SetMinimum(-4);
rp1->GetLowerRefGraph()->SetMaximum(4);
c1->Update();
}
Author
Paul Gessinger

Definition in file ratioplot4.C.