org.geotools.filter.function

Class JenksNaturalBreaksFunction

Object

ExpressionAbstract

DefaultExpression

ClassificationFunction

JenksNaturalBreaksFunction

All Implemented Interfaces:

FunctionExpression, Factory, Expression, Function

public class JenksNaturalBreaksFunction
extends ClassificationFunction

Calculate the Jenks' Natural Breaks classification for a featurecollection

Author:

Ian Turton

Field Summary

Fields

Modifier and Type	Field and Description
static FunctionName	NAME

Fields inherited from class ClassificationFunction

LOGGER

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor and Description
JenksNaturalBreaksFunction()

Method Summary

Modifier and Type	Method and Description
Object	evaluate(Object feature) Subclass should override, default implementation returns null.

Methods inherited from class ClassificationFunction

accept, computeGroupByPercentages, computePercentage, decimalPlaces, fixRound, getClasses, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, getProgressListener, round, setClasses, setFallbackValue, setParameters, setProgressListener, toString

Methods inherited from class DefaultExpression

isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression

Methods inherited from class ExpressionAbstract

evaluate

Methods inherited from class Object

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

Methods inherited from interface Expression

evaluate

Field Detail

NAME

public static FunctionName NAME

Constructor Detail

JenksNaturalBreaksFunction

public JenksNaturalBreaksFunction()

Method Detail

evaluate

public Object evaluate(Object feature)

Description copied from class: ExpressionAbstract

Subclass should override, default implementation returns null.

Specified by:

evaluate in interface Expression

Specified by:

evaluate in class ClassificationFunction

Returns:

default implementation returns null