org.apache.solr.util.stats
Class Histogram

java.lang.Object
  org.apache.solr.util.stats.Histogram

public class Histogram
extends Object

A metric which calculates the distribution of a value.

See Also:

Accurately computing running variance

Method Summary

void	clear() Clears all recorded values.
long	getCount() Returns the number of values recorded.
double	getMax()
double	getMean()
double	getMin()
Snapshot	getSnapshot()
double	getStdDev()
double	getSum()
void	update(int value) Adds a recorded value.
void	update(long value) Adds a recorded value.

Methods inherited from class java.lang.Object

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

Method Detail

clear

public void clear()

Clears all recorded values.

update

public void update(int value)

Adds a recorded value.

Parameters:

value - the length of the value

update

public void update(long value)

Adds a recorded value.

Parameters:

value - the length of the value

getCount

public long getCount()

Returns the number of values recorded.

Returns:

the number of values recorded

getMax

public double getMax()

getMin

public double getMin()

getMean

public double getMean()

getStdDev

public double getStdDev()

getSum

public double getSum()

getSnapshot

public Snapshot getSnapshot()