GumbelDistributionFitter.h

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//                   OpenMS -- Open-Source Mass Spectrometry
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// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2020.
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// $Maintainer: Timo Sachsenberg $
// $Authors: $
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//
#pragma once
 
#include <OpenMS/DATASTRUCTURES/String.h>
#include <OpenMS/DATASTRUCTURES/DPosition.h>
 
#include <vector>
 
 
namespace OpenMS
{
  namespace Math
  {
    class OPENMS_DLLAPI GumbelDistributionFitter
    {
public:
 
      struct GumbelDistributionFitResult
      {
        GumbelDistributionFitResult(double local_a = 1.0, double local_b = 2.0) :
          a(local_a),
          b(local_b)
        {
        }
 
        double a;
        double b;
 
        double eval(double x) const;
        double log_eval_no_normalize(double x) const ;
      };
 
      GumbelDistributionFitter();
      virtual ~GumbelDistributionFitter();
 
      void setInitialParameters(const GumbelDistributionFitResult & result);
 
      GumbelDistributionFitResult fit(std::vector<DPosition<2> > & points);
 
      GumbelDistributionFitResult fitWeighted(const std::vector<double> & x, const std::vector<double> & w);
 
protected:
 
      GumbelDistributionFitResult init_param_;
 
private:
      GumbelDistributionFitter(const GumbelDistributionFitter & rhs);
      GumbelDistributionFitter & operator=(const GumbelDistributionFitter & rhs);
    };
  }
}