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File indexing completed on 2021-02-14 13:31:41

0001 #include "TFile.h"
0002 #include "TH2D.h"
0003 #include "TH1D.h"
0004 #include <iostream>
0005 #include <sstream>
0006 
0007 void ProbabilitySlice()
0008 {
0009   TFile * file = new TFile("limitedSigma2.root", "READ");
0010   TH2D * hist;
0011   file->GetObject("GLh", hist);
0012   hist->SetTitle("J/Psi shape");
0013 
0014   TFile * outputFile = new TFile("Projections2.root", "RECREATE");
0015   outputFile->cd();
0016   int binsX = hist->GetNbinsX();
0017   for( int i = 1; i <= binsX; ++i ) {
0018     std::cout << "projecting bin " << i << std::endl;
0019     std::stringstream ss;
0020     ss << i;
0021     TH1D * projX = hist->ProjectionX((ss.str()+"_"+hist->GetName()).c_str(), i, i);
0022     projX->Write();
0023   }
0024   outputFile->Write();
0025   outputFile->Close();
0026 }