exclusiongraph.C

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/// \file
/// \ingroup tutorial_graphs
/// \notebook
/// Draw three graphs with an exclusion zone.
///
/// \macro_image
/// \macro_code
///
/// \author Olivier Couet
 
TCanvas *exclusiongraph()
{
   TCanvas *c1 = new TCanvas("c1", "Exclusion graphs examples", 200, 10, 600, 400);
   c1->SetGrid();
 
   TMultiGraph *mg = new TMultiGraph();
   mg->SetTitle("Exclusion graphs");
 
   const Int_t n = 35;
   Double_t xvalues1[n], xvalues2[n], xvalues3[n], yvalues1[n], yvalues2[n], yvalues3[n];
   for (Int_t i = 0; i < n; i++) {
      xvalues1[i] = i * 0.1;
      xvalues2[i] = xvalues1[i];
      xvalues3[i] = xvalues1[i] + .5;
      yvalues1[i] = 10 * sin(xvalues1[i]);
      yvalues2[i] = 10 * cos(xvalues1[i]);
      yvalues3[i] = 10 * sin(xvalues1[i]) - 2;
   }
 
   TGraph *gr1 = new TGraph(n, xvalues1, yvalues1);
   gr1->SetLineColor(2);
   gr1->SetLineWidth(1504);
   gr1->SetFillStyle(3005);
 
   TGraph *gr2 = new TGraph(n, xvalues2, yvalues2);
   gr2->SetLineColor(4);
   gr2->SetLineWidth(-2002);
   gr2->SetFillStyle(3004);
   gr2->SetFillColor(9);
 
   TGraph *gr3 = new TGraph(n, xvalues3, yvalues3);
   gr3->SetLineColor(5);
   gr3->SetLineWidth(-802);
   gr3->SetFillStyle(3002);
   gr3->SetFillColor(2);
 
   mg->Add(gr1);
   mg->Add(gr2);
   mg->Add(gr3);
   mg->Draw("AC");
 
   return c1;
}