void spr_test()
{
 
   gROOT->SetStyle("Plain");
   gStyle->SetPalette(1);
   gStyle->SetOptStat(1);
   gStyle->SetOptFit(1);
   gStyle->SetLineWidth(1);
   gStyle->SetTextFont(63);
   gStyle->SetTextSize(15);
   gStyle->SetLabelSize(20,"xy");
   gStyle->SetLabelFont(63,"xy");
   gStyle->SetOptTitle(0);
//   gStyle->SetTitleSize(5.0);
//   gStyle->SetLabelSize(5);
   gStyle->SetLineWidth(1);

   
  //----------------------------------------------------------------------------
  // Total SPR in calorimeter parts
  //----------------------------------------------------------------------------

//  gStyle->SetOptFit(1110);
//  gStyle->SetOptStat(0);

  int num = 0;
  int iiso = 2;
  char histname[1000];
  char prjname[1000];

  TCanvas *SPRTotC = new TCanvas("SPRTotC","SPR in em/fh/ch in CC/ICR/EC",900,600);
  SPRTotC->Divide(4,3,0,0);
  
  for (int ical = 0; ical < 3; ical++)
  {
    for (int idet = 0; idet < 4; idet++)
    {  
      num++;
      SPRTotC->cd(num);
      gPad->SetTicks(1,1);
      sprintf(histname, "ha_spr_tot_pi_cal%d_det%d_iso%d", ical, idet, iiso);
      TH2F* hist = (TH2F*)gROOT->FindObject(histname);
//      if ((num-1)%4 ==0) gPad->SetLeftMargin(0.3);
      hist->GetXaxis()->SetRangeUser(0.0,50.0);
      hist->GetXaxis()->SetNdivisions(205,0);
      hist->GetXaxis()->SetLabelFont(63);
      hist->GetXaxis()->SetLabelSize(15);
      hist->GetXaxis()->SetTitleFont(63);
      hist->GetXaxis()->SetTitleSize(15);
      hist->GetXaxis()->SetTitleOffset(1.8);
      
      hist->GetYaxis()->SetRangeUser(0.0,5.0);
      hist->GetYaxis()->SetNdivisions(205,0);
      hist->GetYaxis()->SetLabelFont(63);
      hist->GetYaxis()->SetLabelSize(15);
      hist->GetYaxis()->SetTitleFont(63);
      hist->GetYaxis()->SetTitleSize(15);
      hist->GetYaxis()->SetTitleOffset(2.5);
      SPRTotC->Update();
      hist->Draw("colz");
    }
  }   
}