jminhep.cluster

Class DataPoint

java.lang.Object

jminhep.cluster.DataPoint

All Implemented Interfaces:

java.io.Serializable

public class DataPoint
extends java.lang.Object
implements java.io.Serializable

Represents an abstraction for a data point in many-dimensional space

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DataPoint(double[] xx) Creates a new instance of a data point
DataPoint(double[] xx, int dim) Creates a new instance of a data point

Method Summary

Modifier and Type	Method and Description
void	assignToCluster(int _clusterNumber) Assigns the data point to a cluster
static double	distance(DataPoint dp1, DataPoint dp2) Returns the distance between two data points
static double	distanceSqrt(DataPoint dp1, DataPoint dp2) Returns the squared distance between two data points
double	getAttribute(int index) Returns the attribute of data point
int	getClusterNumber() Returns the cluster to which the data point belongs
int	getDimension() Get dimension of the point
static void	main(java.lang.String[] args) Main method -- to test the DataPoint class
void	showAttributes() Print all attributes of a data point
java.lang.String	toString() Returns a string representation of this DataPoint

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DataPoint

public DataPoint(double[] xx,
                 int dim)

Creates a new instance of a data point

Parameters:

xx - array of dimension dim

dim - dimension

DataPoint

public DataPoint(double[] xx)

Creates a new instance of a data point

Parameters:

xx - array

Method Detail

getDimension

public int getDimension()

Get dimension of the point

Returns:

dimension (int)

assignToCluster

public void assignToCluster(int _clusterNumber)

Assigns the data point to a cluster

Parameters:

_clusterNumber - the cluster to which this data point is to be assigned

getClusterNumber

public int getClusterNumber()

Returns the cluster to which the data point belongs

Returns:

the cluster number to which the data point belongs

getAttribute

public double getAttribute(int index)

Returns the attribute of data point

Parameters:

index - current idex

Returns:

the value in many dimensions

showAttributes

public void showAttributes()

Print all attributes of a data point

distance

public static double distance(DataPoint dp1,
                              DataPoint dp2)

Returns the distance between two data points

Parameters:

dp1 - the first data point

dp2 - the second data point

Returns:

the distance between the two data points (double)

distanceSqrt

public static double distanceSqrt(DataPoint dp1,
                                  DataPoint dp2)

Returns the squared distance between two data points

Parameters:

dp1 - the first data point

dp2 - the second data point

Returns:

the distance between the two data points

toString

public java.lang.String toString()

Returns a string representation of this DataPoint

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this data point

main

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

Main method -- to test the DataPoint class

Parameters:

args - command line arguments