source: HiSusy/trunk/Delphes-3.0.0/examples/ProcessingTime.C @ 1

Last change on this file since 1 was 1, checked in by zerwas, 11 years ago

first import of structure, PYTHIA8 and DELPHES
File size: 824 bytes
Line 
1/*
2root
3.X examples/ProcessingTime.C("delphes_output.root");
4*/
5
6//------------------------------------------------------------------------------
7
8TGraphErrors gr;
9
10//------------------------------------------------------------------------------
11
12void ProcessingTime(const char *inputFile)
13{
14  TChain *chain = new TChain("Delphes");
15  chain->Add(inputFile);
16
17  TH1F hist("time", "time", 50, 0, 0.01);
18  Int_t i;
19
20  for(i = 1; i < 8; ++i)
21  {
22    chain->Draw("Event.ProcTime >> time", TString::Format("Jet_size == %d", i+1));
23    gr.SetPoint(i, i+1, hist.GetMean()*1000);
24    gr.SetPointError(i, 0, hist.GetRMS()*1000);
25  }
26
27  gr.GetXaxis()->SetLimits(1.0, 9.0);
28  gr.GetXaxis()->SetTitle("number of jets");
29  gr.GetYaxis()->SetTitle("processing time per event, ms");
30  gr.SetMarkerStyle(kFullDotMedium);
31  gr.Draw("AP");
32}
33
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