Facemorph
Class PGA

java.lang.Object
  Facemorph.PGA

public class PGA
extends java.lang.Object

Principal Geodesic Analysis for hyperspherical data (Experimental, only part completed)

Constructor Summary

PGA(java.util.Vector<double[]> data)
Creates a new instance of PGA

Method Summary

void	addToAverage(double[] v, int n) Adds a sample to the average
void	calculateMean(java.util.Vector<double[]> data) Estimate the mean
double[]	getMean() Return the current estimate of the mean
static void	main(java.lang.String[] args) The main method is used for testing
static void	normalise(double[] vec) Subtract the mean of the vector's coords and normlise length to 1

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PGA

public PGA(java.util.Vector<double[]> data)

Creates a new instance of PGA

Parameters:

data - the data vectors to build the PGA from

Method Detail

calculateMean

public void calculateMean(java.util.Vector<double[]> data)

Estimate the mean

Parameters:

data - The data to use to estimate the mean

getMean

public double[] getMean()

Return the current estimate of the mean

Returns:

returns the current estimate of the mean

addToAverage

public void addToAverage(double[] v,
                         int n)

Adds a sample to the average

Parameters:

v - the sample to add

n - the number of samples previously added to the mean

normalise

public static void normalise(double[] vec)

Subtract the mean of the vector's coords and normlise length to 1

Parameters:

vec - the vector to normalise

main

public static void main(java.lang.String[] args)

The main method is used for testing

Parameters:

args -