#ifndef _Discriminant_h_
#define _Discriminant_h_
/* Discriminant.h
 *
 * Copyright (C) 1993-2010 David Weenink
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 djmw 2000
 djmw 20020813 GPL header
 djmw 20100106 Latest modification.
*/

#ifndef _Graphics_h_
	#include "Graphics.h"
#endif
#ifndef _Configuration_h_
	#include "Configuration.h"
#endif
#ifndef _ClassificationTable_h_
	#include "ClassificationTable.h"
#endif
#ifndef _Eigen_h_
	#include "Eigen.h"
#endif
#ifndef _SSCP_h_
	#include "SSCP.h"
#endif

#define Discriminant_members Eigen_members \
	long numberOfGroups;	\
	SSCPs groups;	\
	SSCP total; \
	double *aprioriProbabilities;	\
	double **costs;

#define Discriminant_methods Eigen_methods
class_create (Discriminant, Eigen);

Discriminant Discriminant_create (long numberOfGroups, long numberOfEigenvalues, long dimension);

long Discriminant_groupLabelToIndex (Discriminant me, const wchar_t *label);

int Discriminant_setAprioriProbability (Discriminant me, long group, double p);

long Discriminant_getNumberOfGroups (Discriminant me);

long Discriminant_getNumberOfObservations (Discriminant me, long group);

long Discriminant_getNumberOfFunctions (Discriminant me);

double Discriminant_getWilksLambda (Discriminant me, long numberOfDimensions);

void Discriminant_getPartialDiscriminationProbability (Discriminant me,
	long numberOfDimensions, double *probability, double *chisq, long *ndf);

double Discriminant_getConcentrationEllipseArea (Discriminant me, long group,
	double scale, int confidence, int discriminantDirections, long d1, long d2);

double Discriminant_getLnDeterminant_group (Discriminant me, long group);
double Discriminant_getLnDeterminant_total (Discriminant me);

void Discriminant_drawTerritorialMap (Discriminant me, Graphics g, int discriminantDirections,
	long d1, long d2, double xmin, double xmax, double ymin, double ymax, int fontSize,
	int poolCovarianceMatrices, int garnish);

void Discriminant_drawConcentrationEllipses (Discriminant me, Graphics g,
	double scale, int confidence, wchar_t *label, int discriminantDirections,
	long d1, long d2, double xmin, double xmax, double ymin, double ymax,
	int fontSize, int garnish);

TableOfReal Discriminant_extractCoefficients (Discriminant me, int choice);

TableOfReal Discriminant_extractGroupCentroids (Discriminant me);
TableOfReal Discriminant_extractGroupStandardDeviations (Discriminant me);

SSCP Discriminant_extractPooledWithinGroupsSSCP (Discriminant me);
SSCP Discriminant_extractWithinGroupSSCP (Discriminant me, long index);
SSCP Discriminant_extractBetweenGroupsSSCP (Discriminant me);
Strings Discriminant_extractGroupLabels (Discriminant me);
int Discriminant_setGroupLabels (Discriminant me, Strings thee);

Configuration Discriminant_and_TableOfReal_to_Configuration
	(Discriminant me, TableOfReal thee, long numberOfDimensions);

ClassificationTable Discriminant_and_TableOfReal_to_ClassificationTable
	(Discriminant me, TableOfReal thee, int poolCovarianceMatrices,
	int useAprioriProbabilities);

ClassificationTable Discriminant_and_TableOfReal_to_ClassificationTable_dw
	(Discriminant me, TableOfReal thee, int poolCovarianceMatrices,
	int useAprioriProbabilities, double alpha, double minProb,
	TableOfReal *displacements);

TableOfReal Discriminant_and_TableOfReal_mahalanobis (Discriminant me, TableOfReal thee, long group, bool poolCovarianceMatrices);
/* Mahalanobis distance with respect to group mean */

Discriminant TableOfReal_to_Discriminant (I);

Configuration TableOfReal_to_Configuration_lda (TableOfReal me,
	long numberOfDimensions);

#endif /* _Discriminant_h_ */
