BCEfficiencyFitter.h

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#ifndef __BCEFFICIENCYFITTER__H
#define __BCEFFICIENCYFITTER__H

/*
 * Copyright (C) 2008, Daniel Kollar and Kevin Kroeninger.
 * All rights reserved.
 *
 * For the licensing terms see doc/COPYING.
 */

// ---------------------------------------------------------

#include <vector>

#include "BAT/BCModel.h"

// ROOT classes
class TH1D;
class TF1;
class TGraphAsymmErrors;

// ---------------------------------------------------------

class BCEfficiencyFitter : public BCModel
{
   public:

      /* @{ */

      BCEfficiencyFitter();

      BCEfficiencyFitter(TH1D * hist1, TH1D * hist2, TF1 * func);

      ~BCEfficiencyFitter();

      /* @} */
      /* @{ */

      TH1D * GetHistogram1()
         { return fHistogram1; };

      TH1D * GetHistogram2()
         { return fHistogram2; };

      TGraphAsymmErrors * GetHistogramRatio()
         { return fHistogramRatio; };

      TF1 * GetFitFunction()
         { return fFitFunction; };

      TGraph * GetErrorBand()
         { return fErrorBand; };

      TGraph * GetGraphFitFunction()
         { return fGraphFitFunction; };

      int GetUncertainties(int n, int k, double p, double &xmin, double &xmax);

      /* @} */
      /* @{ */

      int SetHistograms(TH1D * hist1, TH1D * hist2);

      int SetFitFunction(TF1 * func);

      void SetFlagIntegration(bool flag)
         { fFlagIntegration = flag; };

      /* @} */
      /* @{ */

      virtual double LogAPrioriProbability(std::vector <double> parameters);

      virtual double LogLikelihood(std::vector <double> parameters);

      double FitFunction(std::vector <double> x, std::vector <double> parameters);

      int Fit()
         { return this -> Fit(fHistogram1, fHistogram2, fFitFunction); };

      int Fit(TH1D * hist1, TH1D * hist2, TF1 * func);

      void DrawFit(const char * options = "", bool flaglegend = false);

      int CalculatePValueFast(std::vector<double> par, double &pvalue);

      /* @} */

   private:

      TH1D * fHistogram1;

      TH1D * fHistogram2;

      TGraphAsymmErrors * fHistogramRatio;

      TF1 * fFitFunction;

      bool fFlagIntegration;

      TGraph * fErrorBand;

      TGraph * fGraphFitFunction;

      TH1D * fHistogramBinomial;

};

// ---------------------------------------------------------

#endif

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