void ThreeD() {
  gROOT->SetStyle("Plain");

  TCanvas *c1;
  c1=new TCanvas("c1","Canvas",800,600);

  gStyle->SetOptStat(0);

  TFile::Open("GenDigitisation900071.root");

  Bnt005567Step3->SetMarkerStyle(20);
  Bnt005567Step3->SetMarkerColor(2);
  Bnt005567Step3->SetMarkerSize(0.6);

  Bnt005567Step3->SetTitle("Photon10GeV;Layer;x (mm);y (mm)");
  Bnt005567Step3->GetXaxis()->SetTitleOffset(1.3);
  Bnt005567Step3->GetYaxis()->SetTitleOffset(1.3);

  Bnt005567Step3->Draw() ;

  c1->Update();
  c1->Print("ThreeD.png");
}