Package org.apache.commons.math.stat.clustering

Class EuclideanIntegerPoint

java.lang.Object

org.apache.commons.math.stat.clustering.EuclideanIntegerPoint

All Implemented Interfaces:

java.io.Serializable, Clusterable<EuclideanIntegerPoint>

public class EuclideanIntegerPoint
extends java.lang.Object
implements Clusterable<EuclideanIntegerPoint>, java.io.Serializable

A simple implementation of Clusterable for points with integer coordinates.

Since:

2.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
EuclideanIntegerPoint(int[] point)	Build an instance wrapping an integer array.

Method Summary

Modifier and Type	Method	Description
EuclideanIntegerPoint	centroidOf(java.util.Collection<EuclideanIntegerPoint> points)	Returns the centroid of the given Collection of points.
double	distanceFrom(EuclideanIntegerPoint p)	Returns the distance from the given point.
boolean	equals(java.lang.Object other)
int[]	getPoint()	Get the n-dimensional point in integer space.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

EuclideanIntegerPoint

public EuclideanIntegerPoint(int[] point)

Build an instance wrapping an integer array.

The wrapped array is referenced, it is not copied.

Parameters:

point - the n-dimensional point in integer space

Method Detail

getPoint

public int[] getPoint()

Get the n-dimensional point in integer space.

Returns:

a reference (not a copy!) to the wrapped array

distanceFrom

public double distanceFrom(EuclideanIntegerPoint p)

Returns the distance from the given point.

Specified by:

distanceFrom in interface Clusterable<EuclideanIntegerPoint>

Parameters:

p - the point to compute the distance from

Returns:

the distance from the given point

centroidOf

public EuclideanIntegerPoint centroidOf(java.util.Collection<EuclideanIntegerPoint> points)

Returns the centroid of the given Collection of points.

Specified by:

centroidOf in interface Clusterable<EuclideanIntegerPoint>

Parameters:

points - the Collection of points to compute the centroid of

Returns:

the centroid of the given Collection of Points

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Since:

2.1