analysis/AnaEx03/plotHisto.C

0001 {
0002   gROOT->Reset();
0003
0004   // Draw histos filled by Geant4 simulation
0005   //
0006   TFile f = TFile("e-.root");
0007   TCanvas* c1 = new TCanvas("c1", "  ");
0008   c1->Divide(2,2);
0009
0010   TDirectory* dir = (TDirectory*)f.Get("histo");
0011
0012   c1->cd(1);
0013   TH1D* hist1 = (TH1D*)dir->Get("EAbs");
0014   hist1->Draw("HIST");
0015
0016   c1->cd(2);
0017   TH1D* hist2 = (TH1D*)dir->Get("EGap");
0018   hist2->Draw("HIST");
0019
0020   c1->cd(3);
0021   TH1D* hist3 = (TH1D*)dir->Get("LAbs");
0022   hist3->Draw("HIST");
0023
0024   c1->cd(4);
0025   TH1D* hist4 = (TH1D*)dir->Get("LGap");
0026   hist4->Draw("HIST");
0027 }