net.grelf

Class Statistics

java.lang.Object

net.grelf.Statistics

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class Statistics
extends java.lang.Object
implements java.lang.Cloneable, java.io.Serializable

Record to hold a set of measurements of a distribution.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double	max
double	mean
double	min
double	mode
int	n No of samples.
double	stdDev Standard deviation.
double	stdDevMode Standard deviation about the mode instead of about the mean - for autoThreshold.

Constructor Summary

Constructors

Constructor and Description
Statistics() Fields are public so allow setting individually if necessary.
Statistics(int[] f, int start, int end) Calculate statistics from a frequency array.
Statistics(int[] f, int start, int end, RangeDouble extremes) Calculate statistics from a frequency array.

Method Summary

Modifier and Type	Method and Description
Statistics	clone() Returns a new Statistics object with the same data.
java.lang.String	toString() Get a String representation of the Statistics
java.lang.StringBuffer	toXML(java.lang.String indent) Get an XML representation, as <Statistics> and child elements of that.

Methods inherited from class java.lang.Object

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

Field Detail

n

public int n

No of samples.

min

public double min

mode

public double mode

mean

public double mean

max

public double max

stdDev

public double stdDev

Standard deviation.

stdDevMode

public double stdDevMode

Standard deviation about the mode instead of about the mean - for autoThreshold.

Constructor Detail

Statistics

public Statistics()

Fields are public so allow setting individually if necessary.

Statistics

public Statistics(int[] f,
                  int start,
                  int end)

Calculate statistics from a frequency array. Only consider indices from start to end, both assumed to lie in the interval 0..(array length - 1). Assumes scale = 1 and offset = 0 which is OK for Image8or16.

Statistics

public Statistics(int[] f,
                  int start,
                  int end,
                  RangeDouble extremes)

Calculate statistics from a frequency array. Only consider indices from start to end, both assumed to lie in the interval 0..(array length - 1). The scale value maps the image range (image.getRangeDouble()) into the 8- or 16-bit range of the index of the frequency array. Offset is the actual image level for the 0 element of the frequency array.

Method Detail

clone

public Statistics clone()

Returns a new Statistics object with the same data.

Overrides:

clone in class java.lang.Object

toString

public java.lang.String toString()

Get a String representation of the Statistics

Overrides:

toString in class java.lang.Object

toXML

public java.lang.StringBuffer toXML(java.lang.String indent)

Get an XML representation, as <Statistics> and child elements of that. The indent string would typically contain some tab characters (\t).