utils

Class Histogram

java.lang.Object

utils.Histogram

public class Histogram
extends java.lang.Object

A histogram for counting values. Alternative: AdaptiveHistogram of the library Hist4j. Calculates also the relative entropy (Kullback-Leibler divergence) of the histograms’s distributions.

Since:

2011

Constructor Summary

Constructors

Constructor and Description
Histogram(int binCount, double minValue, double maxValue)
Histogram(int binCount, double minValue, double maxValue, int maximumNumberOfValues)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(double value)
static Histogram	createExponentialDistributionHistogram(int binCount, double λ1, double λ2)
void	export(java.io.File file)
void	export(java.io.OutputStream os)
int	getBinCount()
double	getKullbackLeiblerDivergence(Histogram targetHistogram)
long	getMaximumFrequency()
double	getSumOfValues()
java.lang.String	getTextGraph()
long	getTotalNumberOfValues()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Histogram

public Histogram(int binCount,
         double minValue,
         double maxValue)

Histogram

public Histogram(int binCount,
         double minValue,
         double maxValue,
         int maximumNumberOfValues)

Method Detail

createExponentialDistributionHistogram

public static Histogram createExponentialDistributionHistogram(int binCount,
                                               double λ1,
                                               double λ2)

export

public void export(java.io.OutputStream os)

export

public void export(java.io.File file)
            throws java.io.IOException

Throws:

java.io.IOException

add

public void add(double value)

getBinCount

public int getBinCount()

getMaximumFrequency

public long getMaximumFrequency()

getSumOfValues

public double getSumOfValues()

getTotalNumberOfValues

public long getTotalNumberOfValues()

getTextGraph

public java.lang.String getTextGraph()

getKullbackLeiblerDivergence

public double getKullbackLeiblerDivergence(Histogram targetHistogram)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object