nrc.fuzzy
Class Interval

java.lang.Object
  |
  +--nrc.fuzzy.Interval

All Implemented Interfaces:

java.io.Serializable

public class Interval

extends java.lang.Object

implements java.io.Serializable

The Interval class is used to represent an interval of the real number line. It consists of the low value of the interval, the high value of the interval and a flag for each of these two endpoints that indicates whether the endpoint is closed (includes the endpoint) or open (does not include the endpoint). Often we will see an interval represented as:

    [5, 10]  - all values from 5 to 10 including 5 and 10
    (5, 10]  - all values from 5 to 10 excluding 5 and including 10
    [5, 10)  - all values from 5 to 10 including 5 and excluding 10
    (5, 10)  - all values from 5 to 10 excluding 5 and 10
 

We use intervals to represent the support and the alpha-cut of a FuzzyValue.

See Also:

FuzzyValue, Serialized Form

Field Summary

protected double	highX
protected double	lowX
protected java.text.NumberFormat	nf
protected boolean	openFlagHigh
protected boolean	openFlagLow
protected static int	toStringPrecision A constant which represents the default precision of the toString method of Interval.

Method Summary

boolean	getHighOpenFlag()
double	getHighX()
boolean	getLowOpenFlag()
double	getLowX()
void	setHighOpenFlag(boolean flag)
void	setHighX(double highX)
void	setLowOpenFlag(boolean flag)
void	setLowX(double lowX)
static void	setToStringPrecision(int numDecimalPlaces) Sets the precision, in terms of the number of decimal places that will be printed for each double value, of the toString method.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

lowX

protected double lowX

openFlagLow

protected boolean openFlagLow

highX

protected double highX

openFlagHigh

protected boolean openFlagHigh

toStringPrecision

protected static int toStringPrecision

A constant which represents the default precision of the toString method of Interval. This precision can be changed using the setToStringPrecision method.

nf

protected java.text.NumberFormat nf

Method Detail

setLowX

public void setLowX(double lowX)

getLowX

public double getLowX()

setLowOpenFlag

public void setLowOpenFlag(boolean flag)

getLowOpenFlag

public boolean getLowOpenFlag()

setHighX

public void setHighX(double highX)

getHighX

public double getHighX()

setHighOpenFlag

public void setHighOpenFlag(boolean flag)

getHighOpenFlag

public boolean getHighOpenFlag()

setToStringPrecision

public static void setToStringPrecision(int numDecimalPlaces)

Sets the precision, in terms of the number of decimal places that will be printed for each double value, of the toString method.

Parameters:

numDecimalPlaces - the desired number of decimal places for each double value printed by the toString method

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object