net.sourceforge.jFuzzyLogic.defuzzifier
Class DefuzzifierContinuous

java.lang.Object
  net.sourceforge.jFuzzyLogic.defuzzifier.Defuzzifier
      net.sourceforge.jFuzzyLogic.defuzzifier.DefuzzifierContinuous

Direct Known Subclasses:

DefuzzifierCenterOfArea, DefuzzifierCenterOfGravity, DefuzzifierLeftMostMax, DefuzzifierMeanMax, DefuzzifierRightMostMax

public abstract class DefuzzifierContinuous
extends Defuzzifier

Generic continuous defuzzifier (a defuzzifier for continuous membership functions)

Author:

pcingola@users.sourceforge.net

Field Summary

static int	DEFAULT_NUMBER_OF_POINTS Default number of points for 'values[]'
(package private) double	max Where function ends
(package private) double	min Where function begins
(package private) double	stepSize Step size between each element in 'values[]' stepSize = (max - min) / values.length
(package private) double[]	values Funcion values: A generic continuous function y = f(x) where x : [min, max] Values are stored in 'values[]' array.

Fields inherited from class net.sourceforge.jFuzzyLogic.defuzzifier.Defuzzifier

discrete

Constructor Summary

DefuzzifierContinuous(Variable variable)

Method Summary

void	addValue(int index, double value)
org.jfree.chart.JFreeChart	chart(java.lang.String title, boolean showIt) Create a defuzzifier's chart
abstract double	defuzzify() Deffuzification function
double	getArea() Calculate function's area
int	getIndex(double d) Get 'values[]' index
int	getLength()
double	getMax()
double	getMin()
double	getStepSize()
double	getValue(double x) Get a value from 'values[]' using a double as index
double	getValue(int index)
double[]	getValues()
private void	init(double min, double max, int numberOfPoints) Initialize
boolean	isDiscrete()
void	reset() Reset values (in 'values[] array)
void	setDiscrete(boolean discrete)
void	setMax(double max)
void	setMin(double min)
void	setStepSize(double stepSize)
void	setValue(double valueX, double valueY)
void	setValue(int index, double value)
void	setValues(double[] values)

Methods inherited from class net.sourceforge.jFuzzyLogic.defuzzifier.Defuzzifier

getName, toString, toStringFCL

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_NUMBER_OF_POINTS

public static int DEFAULT_NUMBER_OF_POINTS

Default number of points for 'values[]'

max

double max

Where function ends

min

double min

Where function begins

stepSize

double stepSize

Step size between each element in 'values[]' stepSize = (max - min) / values.length

values

double[] values

Funcion values: A generic continuous function y = f(x) where x : [min, max] Values are stored in 'values[]' array. Array's index is calculated as: index = (x - min) / (max - min) * (values.length)

Constructor Detail

DefuzzifierContinuous

public DefuzzifierContinuous(Variable variable)

Method Detail

addValue

public void addValue(int index,
                     double value)

chart

public org.jfree.chart.JFreeChart chart(java.lang.String title,
                                        boolean showIt)

Create a defuzzifier's chart

Specified by:

chart in class Defuzzifier

Parameters:

title - : Title to show (if null => show membership function name)

showIt - : If true, plot is displayed

defuzzify

public abstract double defuzzify()

Deffuzification function

Specified by:

defuzzify in class Defuzzifier

getArea

public double getArea()

Calculate function's area

getIndex

public int getIndex(double d)

Get 'values[]' index

getLength

public int getLength()

getMax

public double getMax()

getMin

public double getMin()

getStepSize

public double getStepSize()

getValue

public double getValue(double x)

Get a value from 'values[]' using a double as index

getValue

public double getValue(int index)

getValues

public double[] getValues()

init

private void init(double min,
                  double max,
                  int numberOfPoints)

Initialize

Parameters:

min - : Minimum

max - : Maximum

numberOfPoints -

isDiscrete

public boolean isDiscrete()

Overrides:

isDiscrete in class Defuzzifier

reset

public void reset()

Reset values (in 'values[] array)

Specified by:

reset in class Defuzzifier

setDiscrete

public void setDiscrete(boolean discrete)

Overrides:

setDiscrete in class Defuzzifier

setMax

public void setMax(double max)

setMin

public void setMin(double min)

setStepSize

public void setStepSize(double stepSize)

setValue

public void setValue(double valueX,
                     double valueY)

setValue

public void setValue(int index,
                     double value)

setValues

public void setValues(double[] values)