edu.tufts.cs.geometry
Class Projection

java.lang.Object
  edu.tufts.cs.geometry.Transformation
      edu.tufts.cs.geometry.Projection

Direct Known Subclasses:

PCAProjection, TrivialProjection

public abstract class Projection
extends Transformation

A Projection is a specific kind of Transformation that reduces the dimensionality of a PointSet.

Field Summary

protected int

targetDimension

Constructor Summary

Projection()

Method Summary

void	project(int dimension, javax.vecmath.GMatrix data)
void	project(int dimension, javax.vecmath.GMatrix sourceData, javax.vecmath.GMatrix data)
abstract void	projectDown(int dimension, javax.vecmath.GMatrix data) Apply the projection with a specific target dimension to a given GMatrix containing the data to be modified.
void	projectDown(int dimension, javax.vecmath.GMatrix sourceData, javax.vecmath.GMatrix data)
static void	projectUp(int dimension, javax.vecmath.GMatrix data)
void	setTargetDimension(int dimension) Projection instances can remember a target dimension so they can be applied without parameters.
void	transform(javax.vecmath.GMatrix data) Apply the specific transformation to the data given

Methods inherited from class java.lang.Object

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

Field Detail

targetDimension

protected int targetDimension

Constructor Detail

Projection

public Projection()

Method Detail

transform

public void transform(javax.vecmath.GMatrix data)

Description copied from class: Transformation

Apply the specific transformation to the data given

Specified by:

transform in class Transformation

Parameters:

data - the data to be modified

setTargetDimension

public void setTargetDimension(int dimension)

Projection instances can remember a target dimension so they can be applied without parameters. The default is 2. This function sets the target dimension.

Parameters:

dimension - the desired final dimension for the PointSet

projectDown

public abstract void projectDown(int dimension,
                                 javax.vecmath.GMatrix data)

Apply the projection with a specific target dimension to a given GMatrix containing the data to be modified.

Parameters:

dimension - the desired final dimension for the PointSet

data - the GMatrix on which to perform the transformation

projectDown

public void projectDown(int dimension,
                        javax.vecmath.GMatrix sourceData,
                        javax.vecmath.GMatrix data)

projectUp

public static void projectUp(int dimension,
                             javax.vecmath.GMatrix data)

project

public void project(int dimension,
                    javax.vecmath.GMatrix data)

project

public void project(int dimension,
                    javax.vecmath.GMatrix sourceData,
                    javax.vecmath.GMatrix data)