]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - PWGPP/EVCHAR/AliCentralityBy1D.cxx
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[u/mrichter/AliRoot.git] / PWGPP / EVCHAR / AliCentralityBy1D.cxx
diff --git a/PWGPP/EVCHAR/AliCentralityBy1D.cxx b/PWGPP/EVCHAR/AliCentralityBy1D.cxx
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-/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- *                                                                        *
- * Author: The ALICE Off-line Project.                                    *
- * Contributors are mentioned in the code where appropriate.              *
- *                                                                        *
- * Permission to use, copy, modify and distribute this software and its   *
- * documentation strictly for non-commercial purposes is hereby granted   *
- * without fee, provided that the above copyright notice appears in all   *
- * copies and that both the copyright notice and this permission notice   *
- * appear in the supporting documentation. The authors make no claims     *
- * about the suitability of this software for any purpose. It is          *
- * provided "as is" without express or implied warranty.                  *
- **************************************************************************/
-
-/*   Origin: Alberica Toia, CERN, Alberica.Toia@cern.ch                   */
-
-///////////////////////////////////////////////////////////////////////////////
-//                                                                           //
-//  class to determine centrality percentiles from 1D distributions          // 
-//                                                                           //
-///////////////////////////////////////////////////////////////////////////////
-
-#include <TNamed.h>
-#include <TH1F.h>
-#include <TString.h>
-#include <TFile.h>
-#include <TMath.h>
-#include <TROOT.h>
-#include <TH2F.h>
-#include <TF1.h>
-#include <TStyle.h>
-#include <TGraphErrors.h>
-#include <vector>
-#include "AliCentralityBy1D.h"
-
-
-ClassImp(AliCentralityBy1D)  
-//______________________________________________________________________________
-
-
-AliCentralityBy1D::AliCentralityBy1D():
-  fInrootfilename(0),
-  fOutrootfilename(0),
-  fHistnames()
-{
-  // standard constructor
-}
-
-AliCentralityBy1D::~AliCentralityBy1D() {
-  // destructor
-}
-
-void AliCentralityBy1D::MakePercentiles() {
-  TH1F *htemp;  
-  TFile *inrootfile;
-  TFile *outrootfile;
-
-  // open inrootfile, outrootfile
-  std::cout << "input file "  << fInrootfilename  << std::endl;
-  std::cout << "output file " << fOutrootfilename << std::endl;
-  inrootfile  = new TFile(fInrootfilename,"OPEN");
-  //outrootfile = new TFile(fOutrootfilename,"RECREATE");
-  outrootfile = new TFile(fOutrootfilename,"UPDATE");
-
-  // loop over all distribution names  
-   std::vector<TString>::const_iterator hni;
-   for(hni=fHistnames.begin(); hni!=fHistnames.end(); hni++) {
-     htemp  = (TH1F*) (inrootfile->Get(*hni)); 
-     if (!htemp) {
-       TList *list  = (TList*) (inrootfile->Get("CentralityStat")); 
-       htemp  = (TH1F*) (list->FindObject(*hni));
-     } 
-
-     TH1F *hpercent  = (TH1F*) htemp->Clone("hpercent");
-     TString name=htemp->GetName();   
-     name.Append("_percentile");
-     hpercent->SetNameTitle(name.Data(),name.Data());
-     hpercent->Reset();
-
-     int start_bin=htemp->FindBin(fMultLowBound);
-     //cout << "START: " << start_bin << " " << fMultLowBound << " " << fPercentXsec << endl;
-     for (int ibin=1; ibin<=htemp->GetNbinsX(); ibin++) {
-      
-       if (ibin>=start_bin)
-       hpercent->SetBinContent(ibin, fPercentXsec *
-                               htemp->Integral(ibin,htemp->GetNbinsX())  / 
-                               htemp->Integral(start_bin,htemp->GetNbinsX()));
-       else
-       hpercent->SetBinContent(ibin, 100);
-       //if (ibin<700) cout << ibin << " " << hpercent->GetBinContent(ibin) << endl;
-    }    
-
-     SaveHisto(htemp,hpercent,outrootfile);
-
-  }
-  
-  // close inrootfile, outrootfile
-  inrootfile->Close();
-  outrootfile->Close();
-  
-}
-
-void AliCentralityBy1D::SaveHisto(TH1F *hist1, TH1F *hist2, TFile *outrootfile) {
-  outrootfile->cd();
-  hist1->Write();
-  hist2->Write();
-
-  // int n=12;
-  // Float_t x1[n];
-  // Float_t centrality[]= {0.,5.,10.,20.,30.,40.,50.,60.,70.,80.,90.,100.};
-  // for (int i=n-1; i>=0; i--) {
-  //   x1[i] = hist2->GetBinCenter(hist2->FindLastBinAbove(centrality[i]));
-  //   cout << x1[i] << ",";
-  // }
-  // cout << endl;
-  
-}
-
-
-