org.encog.mathutil.dimension
Class MultiDimension

java.lang.Object
  org.encog.mathutil.dimension.MultiDimension

public class MultiDimension
extends Object

Handle multi-dimensional integer-based dimensions. Depending on how the values are interpreted, this structure can be used to either represent a coordinate, velocity or a constraint.

Author:

jheaton

Constructor Summary

MultiDimension(int n)
Allocate a MultiDimension.

MultiDimension(MultiDimension lower)

Method Summary

double	calculateLowerStep(DimensionConstraint constraint, int d)
double	calculateUpperStep(DimensionConstraint constraint, int d)
int	flatten(DimensionConstraint constraint) Flatten the multi-dimensional index into a single dimension index.
boolean	forward(DimensionConstraint constraint) Roll the dimension forward by one.
int	getDimension(int d) Get a dimension.
int[]	getDimensions()
void	setDimension(int d, int value) Set a single dimension.
int	size()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiDimension

public MultiDimension(int n)

Allocate a MultiDimension.

Parameters:

n - The number of dimensions.

MultiDimension

public MultiDimension(MultiDimension lower)

Method Detail

getDimension

public int getDimension(int d)

Get a dimension.

Parameters:

d - The dimension to get.

Returns:

The value of the specified dimension.

size

public int size()

Returns:

The number of dimensions.

getDimensions

public int[] getDimensions()

Returns:

The dimensions as an array.

forward

public boolean forward(DimensionConstraint constraint)

Roll the dimension forward by one. Start with the low dimension and tick forward. This can be used to iterate through every index position.

Parameters:

constraint - The dimension constraints.

Returns:

True if there are still more combinations, false if we are done.

flatten

public int flatten(DimensionConstraint constraint)

Flatten the multi-dimensional index into a single dimension index.

Parameters:

constraint - The dimension constraints.

Returns:

The flat 1d index.

setDimension

public void setDimension(int d,
                         int value)

Set a single dimension.

Parameters:

d - The dimension to set.

value - The new value.

toString

public String toString()

Overrides:

toString in class Object

calculateLowerStep

public double calculateLowerStep(DimensionConstraint constraint,
                                 int d)

calculateUpperStep

public double calculateUpperStep(DimensionConstraint constraint,
                                 int d)