res2.C

void res2(TString baseName="R_dzVsTanL_3")
{
  TCanvas * c = new TCanvas();
  TString name;
  TString name1;
  TString name2;
  TString nameGif;
  for (int layer=0;layer<6;++layer)
    {
      int nSector;
      switch (layer)
        {
        case 0: nSector = 4; break;
        case 1: nSector = 4; break;
        case 2: nSector = 6; break;
        case 3: nSector = 6; break;
        case 4: nSector = 8; break;
        case 5: nSector = 8; break;
        }
      for (int sector=0;sector<nSector;++sector)
        {
          name = baseName+"_L"+layer+"_S"+sector;
          name1 = name + "_1";
          name2 = name + "_2";
          nameGif = name+".gif";
          TH2D * h2 = (TH2D *) gDirectory->Get(name);
          h2->FitSlicesY(0,40,60,10);
          h2->Draw("ZCOL");
          TH1D * mean = (TH1D*) gDirectory->Get(name1);
          TH1D * rms  = (TH1D*) gDirectory->Get(name2);
          h2->Draw("ZCOL");
          mean->SetLineColor(4);
          mean->SetMarkerColor(4);
          mean->SetLineWidth(3);
          mean->Draw("SAME");
          //rms->SetLineColor(4);
          //rms->SetMarkerColor(4);
          //rms->SetLineWidth(3);
          //rms->Draw("SAME");
          c->Print(nameGif);
        }
    }
}

  /*
  R_dzVsTanL_3_L0_S0.FitSlicesY(0,40,60,10);
  R_dzVsTanL_3_L0_S0.Draw("ZCOL");
  R_dzVsTanL_3_L0_S0_1.SetLineColor(4);
  R_dzVsTanL_3_L0_S0_1.SetLineWidth(2);
  R_dzVsTanL_3_L0_S0_1.SetMarkerColor(4);
  R_dzVsTanL_3_L0_S0_1.Draw("SAME");
    
  TH1D *h2_1 = (TH1D*)gDirectory->Get("h2_1");

  */