com.tdunning.math.stats

Class Histogram

java.lang.Object

com.tdunning.math.stats.Histogram

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FloatHistogram, LogHistogram

public abstract class Histogram
extends Object
implements Serializable

A Histogram is a histogram with cleverly chosen, but fixed, bin widths. Different implementations may provide better or worse speed or space complexity, but each is attuned to a particular distribution or error metric.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected long[]	counts
protected double	logFactor
protected double	logOffset
protected double	max
protected double	min

Constructor Summary

Constructors

Constructor and Description
Histogram(double min, double max)

Method Summary

Modifier and Type	Method and Description
void	add(double v)
protected abstract int	bucketIndex(double x)
double[]	getBounds()
long[]	getCounts()
protected void	setupBins(double min, double max)

Methods inherited from class java.lang.Object

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

Field Detail

counts

protected long[] counts

min

protected double min

max

protected double max

logFactor

protected double logFactor

logOffset

protected double logOffset

Constructor Detail

Histogram

public Histogram(double min,
                 double max)

Method Detail

setupBins

protected void setupBins(double min,
                         double max)

add

public void add(double v)

getBounds

public double[] getBounds()

getCounts

public long[] getCounts()

bucketIndex

protected abstract int bucketIndex(double x)