regression.h File Reference

#include "deprecated.h"

Go to the source code of this file.

Macros
#define	_REGRESSION_H_DEPRECATED

Functions
BOOL	blCalculateBestFitLine (double **coordinates, int numberOfPoints, int numberOfDimensions, double *centroid, double *eigenVector)
void	blFindCentroid (REAL **coordinates, int numberOfPoints, int numberOfDimensions, REAL *centroid)
BOOL	blCalculateCovarianceMatrix (REAL **x, int numX, int numY, REAL **cov)

Macro Definition Documentation

#define _REGRESSION_H_DEPRECATED

Definition at line 16 of file regression.h.

Function Documentation

BOOL blCalculateBestFitLine	(	REAL **	coordinates,
		int	numberOfPoints,
		int	numberOfDimensions,
		REAL *	centroid,
		REAL *	eigenVector
	)

Parameters

[in]	coordinates	2D Array containing the coordinates
[in]	numberOfPoints	The number of points in the array
[in]	numberOfDimensions	The number of dimensions (usually 3)
[out]	centroid	The centroid of the points
[out]	eigenVector	The best Eigen vector

Returns

Success?

Calculates a best fit line through a set of coordinates in 3D. The results are returned in 'eigenVector'

The code calculates the centroid and ouputs this. The covariance matrix is then calculated and the Eigen vectors and values of the covariance matrix are then calculated. The Eigenvalue with the largest Eigenvector represents the best fit line passing through the centroid.

• 07.10.14 Original By: ACRM Based on code by Abhi Raghavan

Definition at line 116 of file regression.c.

BOOL blCalculateCovarianceMatrix	(	REAL **	matrix,
		int	numX,
		int	numY,
		REAL **	cov
	)

Parameters

[in]	matrix	The matrix
[in]	numX	x-dimension of the matrix
[in]	numY	y-dimension of the matrix
[out]	cov	The covariance matrix

Returns

Success

Find the covariance matrix for a given matrix

• 07.10.14 Original By: ACRM (based on code by Abhi Raghavan)

Definition at line 254 of file regression.c.

void blFindCentroid	(	REAL **	matrix,
		int	numX,
		int	numY,
		REAL *	centroid
	)

Parameters

[in]	matrix	Coordinate array
[in]	numX	The x-dimension of the array
[in]	numY	The y-dimension of the array
[out]	centroid	The centroid of the points

Calculates the centroid of an array of points

• 07.10.14 Original By: ACRM

Definition at line 215 of file regression.c.