JEnergyCorrection.cc

Go to the documentation of this file.

#include <string>
#include <iostream>
#include <iomanip>
 
#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"
 
#include "JFit/JEvtToolkit.hh"
#include "JFit/JEnergyCorrection.hh"
#include "JGizmo/JManager.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 *
 * Example program to histogram energy corrections.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
 
  string         outputFile;  
  vector<string> energy_correction;
  int            debug;
 
  try {
 
    JParser<> zap("Example program to histogram energy corrections.");
 
    zap['o'] = make_field(outputFile);
    zap['E'] = make_field(energy_correction);
    zap['d'] = make_field(debug)               =  2;
 
    zap(argc, argv);
  }
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }
 
  using namespace JPP;
 
  JManager<string, TH1D> zmap(new TH1D("h[%]",  NULL, 1000, +2.0, +7.0));       // [log(E)]
 
  for (vector<string>::const_iterator f1 = energy_correction.begin(); f1 != energy_correction.end(); ++f1) {
 
    const JEnergyCorrection fcn(*f1);
 
    DEBUG("Formula " << fcn << endl);
 
    for (int i = 1; i <= zmap[*f1]->GetNbinsX(); ++i) {
    
      const double x = zmap[*f1]->GetBinCenter (i);
      const double E = pow(10.0, x);
      const double y = fcn(E) / E;
    
      zmap[*f1]->SetBinContent(i, y);
    }
  }
 
  zmap.Write(outputFile.c_str());
}