/[PAMELA software]/PamCut/Collections/EffRigCollection/EffRigCollection.cpp
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revision 1.4 by pam-fi, Thu Oct 1 10:33:49 2009 UTC revision 1.6 by pam-fi, Sun Nov 8 16:04:01 2009 UTC
# Line 12  Line 12 
12  #include "TGraphAsymmErrors.h"  #include "TGraphAsymmErrors.h"
13    
14  extern "C" {  extern "C" {
15  bool efficiency_(Int_t*, Int_t*, Double_t*, Double_t*, Double_t*);  /*! @brief Fortran routine by Sergio Ricciarini which computes errors on the efficiency.
16     *
17     * This routine has been developed to carefully evaluate the error bars on the efficiency,
18     * which must have a value between 0 and 1. See the appendix of Sergio's PhD thesis for more
19     * details.
20     * The important thing is that the computed efficiency will have the unphysical value 1.1
21     * if there are less than 8 events in the efficiency sample (eg., the sample used to compute the
22     * efficiency). This is necessary to have a reliable estimate of the errors.
23     *
24     * @param sel Pointer to an Int_t variable containing the number of events in the efficiency sample.
25     * @param det Pointer to an Int_t variable containing the number of events in the efficiency sample
26     *            which satisfied the set of cuts  for which the efficiency is being measured.
27     * @param eff Pointer to a Double_t variable where the computed efficiency will be returned.
28     * @param errLow Pointer to a Double_t variable where the length of the lower error bar will
29     *               be returned.
30     * @param errHigh Pointer to a Double_t variable where the length of the upper error bar will
31     *               be returned.
32     * @return Not clear at this point... ignore it.
33     */
34    bool efficiency_(Int_t* sel, Int_t* det, Double_t* eff, Double_t* errLow, Double_t* errHigh);
35  }  }
36    
37  EffRigCollection::EffRigCollection(const char *collectionName, TString outFileBase, TString rigBinsFile, int errMethod) :  EffRigCollection::EffRigCollection(const char *collectionName, TString outFileBase, TString rigBinsFile, int errMethod, bool owns) :
38    EffCollection(collectionName, outFileBase, errMethod), _bins(0), _selVector(0), _detVector(0), _outUp(0), _outDown(0) {    EffCollection(collectionName, outFileBase, errMethod, owns), _bins(0), _selVector(0), _detVector(0), _outUp(0), _outDown(0) {
39    
40    ifstream rigBinListFile;    ifstream rigBinListFile;
41    rigBinListFile.open(rigBinsFile);    rigBinListFile.open(rigBinsFile);
# Line 98  void EffRigCollection::Finalize() { Line 117  void EffRigCollection::Finalize() {
117    errGraph.SetMarkerStyle(7);    errGraph.SetMarkerStyle(7);
118    errGraph.GetYaxis()->SetRangeUser(0, 1.2);    errGraph.GetYaxis()->SetRangeUser(0, 1.2);
119    
120    
121    if (_errMethod == EFFERR_ROOT) {    if (_errMethod == EFFERR_ROOT) {
122      double binning[_bins.size()];      double binning[_bins.size()];
123      for (unsigned int i = 0; i < _bins.size(); i++)      for (unsigned int i = 0; i < _bins.size(); i++)
# Line 156  void EffRigCollection::Finalize() { Line 176  void EffRigCollection::Finalize() {
176        outTextFile << setw(10) << _bins[i] << setw(10) << _bins[i + 1] << setw(10) << _detVector[i] << setw(10)        outTextFile << setw(10) << _bins[i] << setw(10) << _bins[i + 1] << setw(10) << _detVector[i] << setw(10)
177            << _selVector[i];            << _selVector[i];
178        if (_selVector[i] != 0)        if (_selVector[i] != 0)
179          outTextFile << setw(10) << eff[i] << setw(10) << errLow[i] << setw(10) << errHigh[i] << "\n";          outTextFile << setw(10) << eff[i] << setw(10) << errLow[i] << setw(10) << errHigh[i];
180        else        else
181          outTextFile << setw(10) << 0. << setw(10) << 0. << setw(10) << 0. << endl;          outTextFile << setw(10) << 0. << setw(10) << 0. << setw(10) << 0.;
182          if (i < _selVector.size() - 1) //Avoids to print an empty line at the end of the file
183            outTextFile << endl;
184    
185      }      }
186    
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