ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkProbabilityDistribution.h
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5  * Licensed under the Apache License, Version 2.0 (the "License");
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18 #ifndef __itkProbabilityDistribution_h
19 #define __itkProbabilityDistribution_h
20 
21 #include "itkIntTypes.h"
22 #include "itkObject.h"
23 #include "itkObjectFactory.h"
24 #include "itkArray.h"
25 
26 namespace itk
27 {
28 namespace Statistics
29 {
71 class ITK_EXPORT ProbabilityDistribution:
72  public Object
73 {
74 public:
77  typedef Object Superclass;
80 
83 
86 
90  virtual SizeValueType GetNumberOfParameters() const = 0;
91 
95  itkGetConstReferenceMacro(Parameters, ParametersType);
96 
100  virtual void SetParameters(const ParametersType & params)
101  {
102  if ( ( params.GetSize() != m_Parameters.GetSize() )
103  || ( params != m_Parameters ) )
104  {
105  m_Parameters = params;
106  this->Modified();
107  }
108  }
110 
113  virtual double EvaluatePDF(double x) const = 0;
114 
118  virtual double EvaluatePDF(double x, const ParametersType &) const = 0;
119 
123  virtual double EvaluateCDF(double x) const = 0;
124 
128  virtual double EvaluateCDF(double x, const ParametersType &) const = 0;
129 
134  virtual double EvaluateInverseCDF(double p) const = 0;
135 
140  virtual double EvaluateInverseCDF(double p, const ParametersType &) const = 0;
141 
143  virtual bool HasMean() const = 0;
144 
146  virtual bool HasVariance() const = 0;
147 
150  virtual double GetMean() const = 0;
151 
154  virtual double GetVariance() const = 0;
155 
156 protected:
158  virtual ~ProbabilityDistribution(void) {}
159  void PrintSelf(std::ostream & os, Indent indent) const
160  {
161  Superclass::PrintSelf(os, indent);
162  os << indent << "Parameters: " << m_Parameters << std::endl;
163  }
164 
166 private:
167  ProbabilityDistribution(const Self &); //purposely not implemented
168  void operator=(const Self &); //purposely not implemented
169 }; // end of class
170 } // end of namespace Statistics
171 } // end namespace itk
172 
173 #endif
174