BCHistogramFitter.h

#ifndef __BCMODELHISTOGRAMFITTER__H
#define __BCMODELHISTOGRAMFITTER__H

/*
 * Copyright (C) 2007-2018, the BAT core developer team
 * All rights reserved.
 *
 * For the licensing terms see doc/COPYING.
 * For documentation see http://mpp.mpg.de/bat
 */

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

#include "BCFitter.h"

#include <string>
#include <vector>

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

class BCHistogramFitter : public BCFitter
{
public:

    /* @{ */
    BCHistogramFitter(const TH1& hist, const TF1& func, const std::string& name = "histogram_fitter_model");

    virtual ~BCHistogramFitter() {};

    /* @} */

    /* @{ */

    const TH1& GetHistogram()
    { return fHistogram; };

    /* @} */

    /* @{ */

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

    virtual void Fit();

    void DrawFit(const std::string& options = "HIST", bool flaglegend = false);

    double CalculatePValueFast(const std::vector<double>& par, unsigned nIterations = 100000);

    double CalculatePValueLikelihood(const std::vector<double>& par);

    double CalculatePValueLeastSquares(const std::vector<double>& par, bool weightExpect = true);
    /* @} */

protected:

    TH1D fHistogram;

    virtual double GraphCorrection(unsigned ibin) const;
};

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

#endif