/data/refman/pasoursint/CMSSW_5_2_9/src/Validation/RecoB/interface/HistoCompare.h

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#ifndef RecoB_HistoCompare_h
#define RecoB_HistoCompare_h

#include "TFile.h"
#include "TH1.h"
#include "TString.h"

#include <iostream>
#include <string>
#include <vector>

class HistoCompare {

  public:
        HistoCompare();
        HistoCompare(TString refFilename);

        ~HistoCompare();

        TH1* Compare(TH1* h, TString hname);

        void SetReferenceFilename(TString filename) {
          refFilename_ = filename;
          //if (refFile_) delete refFile_;
          refFile_ = new TFile(refFilename_);
          if (refFile_->IsZombie()) {
                  std::cout << " Error openning file " << refFilename_ << std::endl;
                  std::cout << " we will not compare histograms. " << std::endl;
                  do_nothing_ = true;
          }
          std::cout << " open file" << std::endl;
        };

        void SetChi2Test(bool test=true) {
                setChi2Test_ = test;
        };
        
        void SetKGTest(bool test=true) {
                setKGTest_ = test;
        };
        
        double GetResult() { return result_; };

  private:

        bool setChi2Test_;
        bool setKGTest_;
        double result_;
        bool do_nothing_;
        
        TH1 *resHisto_;
        TH1 *refHisto_;
        TFile *refFile_;
        
        TString refFilename_;

        //std::map<std::string, TH1*> histomap_;
        
};

#endif