{

  TCanvas *c1 = new TCanvas("c1", "", 950, 950);
  
  TH2D *h2_1 = new TH2D("h2_1", "", 200, -5., 5., 200, -5., 5.);

  TH2D *h2_2 = new TH2D("h2_2", "", 200, -5., 5., 200, -5., 5.);

  for( int i = 0; i < 10000; i++ ){
    h2_2->Fill(gRandom->Gaus(0, 1.5), gRandom->Gaus(0, 0.8) );
  }
  h2_2->SetMarkerColor(2);
  h2_2->SetMarkerStyle(20);
  
  for( int i = 0; i < 1000000; i++ ){
    h2_1->Fill(gRandom->Gaus(0, 1.5), gRandom->Gaus(0, 0.8) );
  }

  c1->SetLogz();
  //h2_1->Draw("colz");
  h2_2->Draw("");
}