{
   gROOT->Reset();
   gStyle->SetOptStat(0);
   gStyle->SetPalette(1);
   TF2 *f2 = new TF2("f2","xygaus + xygaus(5) + xylandau(10)",-4,4,-4,4);
   Double_t params[] = {130,-1.4,1.8,1.5,1, 150,2,0.5,-2,0.5, 3600,-2,0.7,-3,0.3};
   f2.SetParameters(params);
   TH2F h2("h2","",20,-4,4,20,-4,4);
   h2.FillRandom("f2",40000);

   TEllipse ellipse(5,0,5,5);
   ellipse.SetFillStyle(0);
   ellipse.SetLineWidth(4);

   h2.Draw("COL");
   ellipse.Draw("SAME");
}