vtkPCAStatistics.h

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/*=========================================================================

Program:   Visualization Toolkit
Module:    vtkPCAStatistics.h

Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2010 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
  -------------------------------------------------------------------------*/
#ifndef __vtkPCAStatistics_h
#define __vtkPCAStatistics_h

#include "vtkFiltersStatisticsModule.h" // For export macro
#include "vtkMultiCorrelativeStatistics.h"

class vtkDoubleArray;
class vtkIdTypeArray;

class VTKFILTERSSTATISTICS_EXPORT vtkPCAStatistics : public vtkMultiCorrelativeStatistics
{
public:
  vtkTypeMacro(vtkPCAStatistics,vtkMultiCorrelativeStatistics);
  virtual void PrintSelf( ostream& os, vtkIndent indent );
  static vtkPCAStatistics* New();

  //BTX

  enum NormalizationType
    {
    NONE,               
    TRIANGLE_SPECIFIED, 
    DIAGONAL_SPECIFIED, 
    DIAGONAL_VARIANCE,  
    NUM_NORMALIZATION_SCHEMES 
    };


  enum ProjectionType
    {
    FULL_BASIS,         
    FIXED_BASIS_SIZE,   
    FIXED_BASIS_ENERGY, 
    NUM_BASIS_SCHEMES   
    };
  //ETX


  vtkSetMacro(NormalizationScheme,int);
  vtkGetMacro(NormalizationScheme,int);
  virtual void SetNormalizationSchemeByName( const char* sname );
  virtual const char* GetNormalizationSchemeName( int scheme );


  virtual vtkTable* GetSpecifiedNormalization();
  virtual void SetSpecifiedNormalization( vtkTable* );


  void GetEigenvalues(int request, vtkDoubleArray*);
  void GetEigenvalues(vtkDoubleArray*);
  double GetEigenvalue(int request, int i);
  double GetEigenvalue(int i);


  void GetEigenvectors(int request, vtkDoubleArray* eigenvectors);
  void GetEigenvectors(vtkDoubleArray* eigenvectors);
  void GetEigenvector(int i, vtkDoubleArray* eigenvector);
  void GetEigenvector(int request, int i, vtkDoubleArray* eigenvector);


  vtkSetMacro(BasisScheme,int);
  vtkGetMacro(BasisScheme,int);
  virtual const char* GetBasisSchemeName( int schemeIndex );
  virtual void SetBasisSchemeByName( const char* schemeName );


  vtkSetMacro(FixedBasisSize,int);
  vtkGetMacro(FixedBasisSize,int);


  vtkSetClampMacro(FixedBasisEnergy,double,0.,1.);
  vtkGetMacro(FixedBasisEnergy,double);


  virtual bool SetParameter( const char* parameter,
                             int index,
                             vtkVariant value );

protected:
  vtkPCAStatistics();
  ~vtkPCAStatistics();

  virtual int FillInputPortInformation( int port, vtkInformation* info );

  virtual void Derive( vtkMultiBlockDataSet* );


  virtual void Test( vtkTable*,
                     vtkMultiBlockDataSet*,
                     vtkTable* );


  virtual void Assess( vtkTable*,
                       vtkMultiBlockDataSet*,
                       vtkTable* );
  //BTX

  virtual vtkDoubleArray* CalculatePValues(vtkIdTypeArray*, vtkDoubleArray*);

  //BTX

  virtual void SelectAssessFunctor( vtkTable* inData,
                                    vtkDataObject* inMeta,
                                    vtkStringArray* rowNames,
                                    AssessFunctor*& dfunc );
  //ETX

  int NormalizationScheme;
  int BasisScheme;
  int FixedBasisSize;
  double FixedBasisEnergy;

  //BTX
  static const char* BasisSchemeEnumNames[NUM_BASIS_SCHEMES + 1];
  static const char* NormalizationSchemeEnumNames[NUM_NORMALIZATION_SCHEMES + 1];
  //ETX

private:
  vtkPCAStatistics( const vtkPCAStatistics& ); // Not implemented
  void operator = ( const vtkPCAStatistics& );  // Not implemented
};

#endif // __vtkPCAStatistics_h