SimpleDiscreteDistribution.h

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//
// File: SimpleDiscreteDistribution.h
// Created by: Julien Dutheil
// Created on: ?
//

/*
Copyright or © or Copr. Bio++ Development Team, (November 17, 2004)

This software is a computer program whose purpose is to provide classes
for numerical calculus.

This software is governed by the CeCILL  license under French law and
abiding by the rules of distribution of free software.  You can  use, 
modify and/ or redistribute the software under the terms of the CeCILL
license as circulated by CEA, CNRS and INRIA at the following URL
"http://www.cecill.info". 

As a counterpart to the access to the source code and  rights to copy,
modify and redistribute granted by the license, users are provided only
with a limited warranty  and the software's author,  the holder of the
economic rights,  and the successive licensors  have only  limited
liability. 

In this respect, the user's attention is drawn to the risks associated
with loading,  using,  modifying and/or developing or reproducing the
software by the user in light of its specific status of free software,
that may mean  that it is complicated to manipulate,  and  that  also
therefore means  that it is reserved for developers  and  experienced
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*/

#ifndef _SIMPLEDISCRETEDISTRIBUTION_H_
#define _SIMPLEDISCRETEDISTRIBUTION_H_

#include "AbstractDiscreteDistribution.h"

// From the STL:
#include <map>

namespace bpp
{

class SimpleDiscreteDistribution:
  public AbstractDiscreteDistribution
{
private:

  std::map<size_t, std::vector<double> > givenRanges_;
  
  public:
  SimpleDiscreteDistribution(const std::map<double, double>& distribution, double precision=NumConstants::TINY(), bool fixed=false);

  SimpleDiscreteDistribution(const std::vector<double>& values, const std::vector<double>& probas, double prec=NumConstants::TINY(), bool fixed=false);

  SimpleDiscreteDistribution(const std::vector<double>& values, const std::map<size_t, std::vector<double> >& ranges, const std::vector<double>& probas, double prec=NumConstants::TINY(), bool fixed=false);

  virtual ~SimpleDiscreteDistribution() {}

  SimpleDiscreteDistribution(const SimpleDiscreteDistribution&);

  SimpleDiscreteDistribution& operator=(const SimpleDiscreteDistribution&);
  
  SimpleDiscreteDistribution * clone() const { return new SimpleDiscreteDistribution(*this); }

public:

  /*
   *@brief Returns the map of the given ranges for the values.
   *
   */
  
  const std::map<size_t, std::vector<double> > getRanges() const { return givenRanges_;}
    
  std::string getName() const {return("Simple");}
  
  void discretize();
  
  void fireParameterChanged(const ParameterList & parameters);

  double getLowerBound() const {
    return distribution_.begin()->first;
  }

  double getUpperBound() const {
    return distribution_.rbegin()->first;
  }  
  
  double qProb(double x) const ;
  
  double pProb(double x) const ;
                                
  double Expectation(double a) const;

  void restrictToConstraint(const Constraint& c);
};

} //end of namespace bpp.

#endif  //_SIMPLEDISCRETEDISTRIBUTION_H_