oracle.spatial.hadoop.vector.cluster.kmeans

Class ConvexHullClusterShapeGenerator

java.lang.Object

oracle.spatial.hadoop.vector.cluster.kmeans.ConvexHullClusterShapeGenerator

All Implemented Interfaces:

ClusterShapeGenerator

public class ConvexHullClusterShapeGenerator
extends java.lang.Object
implements ClusterShapeGenerator

Generates clusters shapes as hexagons

Author:

hsaucedo

Constructor Summary

Constructors

Constructor and Description
ConvexHullClusterShapeGenerator()

Method Summary

Modifier and Type	Method and Description
void	addMemberPoint(double[] point) Adds the point of a cluster member.
void	clear() Clears the current status.
JGeometry	generateShape() Generates the current cluster shape.
void	setClusterCenter(double[] point) Sets the center point of the current cluster
void	setup(Configuration conf) Perform initialization tasks.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConvexHullClusterShapeGenerator

public ConvexHullClusterShapeGenerator()

Method Detail

addMemberPoint

public void addMemberPoint(double[] point)

Description copied from interface: ClusterShapeGenerator

Adds the point of a cluster member. The point reference may be reused so the implemented may need to create a copy.

Specified by:

addMemberPoint in interface ClusterShapeGenerator

Parameters:

point - point ordinates

clear

public void clear()

Description copied from interface: ClusterShapeGenerator

Clears the current status. It should be called between cluster shape generation sessions

Specified by:

clear in interface ClusterShapeGenerator

generateShape

public JGeometry generateShape()

Description copied from interface: ClusterShapeGenerator

Generates the current cluster shape. The cluster center and the cluster members must have been set previously

Specified by:

generateShape in interface ClusterShapeGenerator

Returns:

a JGeometry instance

setClusterCenter

public void setClusterCenter(double[] point)

Description copied from interface: ClusterShapeGenerator

Sets the center point of the current cluster

Specified by:

setClusterCenter in interface ClusterShapeGenerator

Parameters:

point - point ordinates

setup

public void setup(Configuration conf)

Description copied from interface: ClusterShapeGenerator

Perform initialization tasks. This method is called only once per instance

Specified by:

setup in interface ClusterShapeGenerator

Parameters:

conf - the job configuration