#include "TFile.h"
#include "TH1.h"
#include "TRandom.h"
#include "TBenchmark.h"

void hsran(){

// Create a new canvas.
	TCanvas *c1 = new TCanvas("c1","MarkerStyle 0",10,10,500,500);
// Create some histograms, a profile histogram and an ntuple
	auto hp1 = new TH2F("hp1","One peak",100,-4,4,100,-4,4);
	auto hp2 = new TH2F("hp2","One peak",100,-4,4,100,-4,4);

	gBenchmark->Reset();
	gBenchmark->Start("Filling");
	Double_t px, py;
// Fill histograms randomly
  gRandom->SetSeed();  
  for (Int_t i = 0; i < 500000; i++) {
     gRandom->Rannor(px,py);
	  hp1->Fill(px, py);
	  hp2->Fill(px, py);
	}
  gBenchmark->Show("Filling");
  gBenchmark->Reset();
  gBenchmark->Start("Draw2d_Marker_0");
  hp1->SetMarkerStyle(0);
  hp1->Draw();
  c1->Modified();
  c1->Update();
  gBenchmark->Show("Draw2d_Marker_0");
  TCanvas *c2 = new TCanvas("c2","MarkerStyle 7",550,10,500,500);
  gBenchmark->Start("Draw2d_Marker_2");
  hp2->SetMarkerStyle(2);
  hp2->Draw();
  c2->Modified();
  c2->Update();
  gBenchmark->Show("Draw2d_Marker_2");
}