{
gROOT->SetStyle("Plain");

c1 = new TCanvas("c1","Dynamic Filling Example",200,10,400,400);
// c1->SetOptStat("0000000");  not property of c1

  Float_t   x_50[8] = {0, 34, 50, 75, 125,           0, 10, 22};
  Float_t res_50[8] = {221, 224, 221, 218, 204,      0, 50, 50};

  Float_t   x_80[9] = {0, 25, 34, 50, 75, 125,       0, 10, 22};
  Float_t res_80[9] = {240, 249, 244, 242, 225, 241, 0, 75, 75};

  Float_t   x_120[8] = {0, 25, 50, 75, 125,          0, 10, 22};
  Float_t res_120[8] = {272, 261, 241, 244, 291,     0, 100,100};

  frame = new TH2F("frame","resolution vs threshold cut",10,0.,130.,10,0.,400.); 
  //frame->SetOptStat("0000000");
  frame->Draw();  

  for (int i=0;i<4;i++) {
    TLine *line1 = new TLine(x_50[i], res_50[i], x_50[i+1], res_50[i+1]); 
    line1->SetLineWidth(3);
    line1->SetLineColor(2);
    line1->Draw(); 
  }
  TLine *line1a = new TLine(x_50[6], res_50[6], x_50[6+1], res_50[6+1]); 
  line1a->SetLineWidth(3);
  line1a->SetLineColor(2);
  line1a->Draw();

  for (int i=0;i<5;i++) {
    TLine *line2 = new TLine(x_80[i], res_80[i], x_80[i+1], res_80[i+1]); 
    line2->SetLineWidth(3);
    line2->SetLineColor(3);
    line2->Draw(); 
  }
  TLine *line2a = new TLine(x_80[7], res_80[7], x_80[7+1], res_80[7+1]); 
  line2a->SetLineWidth(3);
  line2a->SetLineColor(3);
  line2a->Draw();

  for (int i=0;i<4;i++) {
    TLine *line3 = new TLine(x_120[i], res_120[i], x_120[i+1], res_120[i+1]); 
    line3->SetLineWidth(3);
    line3->SetLineColor(4);
    line3->Draw(); 
  }
  TLine *line3a = new TLine(x_120[6], res_120[6], x_120[6+1], res_120[6+1]); 
  line3a->SetLineWidth(3);
  line3a->SetLineColor(4);
  line3a->Draw();

}