| Geant4 Cross Reference |
1 // ROOT macro file for plotting example B4 ntu 1
2 //
3 // Can be run from ROOT session:
4 // root[0] .x plotNtuple.C
5
6 {
7 gROOT->Reset();
8 gROOT->SetStyle("Plain");
9
10 // Draw histos filled by Geant4 simulation
11 //
12
13 // Open file filled by Geant4 simulation
14 TFile f("B4.root");
15
16 // Create a canvas and divide it into 2x2 pa
17 TCanvas* c1 = new TCanvas("c1", "", 20, 20,
18 c1->Divide(2,2);
19
20 // Get ntuple
21 TNtuple* ntuple = (TNtuple*)f.Get("B4");
22
23 // Draw Eabs histogram in the pad 1
24 c1->cd(1);
25 ntuple->Draw("Eabs");
26
27 // Draw Labs histogram in the pad 2
28 c1->cd(2);
29 ntuple->Draw("Labs");
30
31 // Draw Egap histogram in the pad
32 c1->cd(3);
33 //set logarithmic scale for y
34 //gPad->SetLogy(1);
35 ntuple->Draw("Egap");
36
37 // Draw Lgap histogram in the pad 4
38 c1->cd(4);
39 //set logarithmic scale for y
40 //gPad->SetLogy(1);
41 ntuple->Draw("Lgap");
42 }
43