Class Centroid

java.lang.Object

com.tdunning.math.stats.Centroid

All Implemented Interfaces:

Serializable, Comparable<Centroid>

public class Centroid
extends Object
implements Comparable<Centroid>, Serializable

A single centroid which represents a number of data points.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private List<Double>	actualData
private double	centroid
private int	count
private int	id
private static final AtomicInteger	uniqueCount

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Centroid(boolean record)
	Centroid(double x)
	Centroid(double x, int w)
	Centroid(double x, int id, boolean record)
	Centroid(double x, int w, int id)
(package private)	Centroid(double x, int w, List<Double> data)

Method Summary

Modifier and Type	Method	Description
void	add(double x, int w)
void	add(double x, int w, Iterable<? extends Double> data)
int	compareTo(Centroid o)
int	count()
static Centroid	createWeighted(double x, int w, Iterable<? extends Double> data)
List<Double>	data()
int	hashCode()
int	id()
void	insertData(double x)
double	mean()
private void	readObject(ObjectInputStream in)
private void	start(double x, int w, int id)
String	toString()

Methods inherited from class Object

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

Field Details

uniqueCount

private static final AtomicInteger uniqueCount

centroid

private double centroid

count

private int count

id

private transient int id

actualData

private List<Double> actualData

Constructor Details

Centroid

private Centroid(boolean record)

Centroid

public Centroid(double x)

Centroid

public Centroid(double x,
 int w)

Centroid

public Centroid(double x,
 int w,
 int id)

Centroid

public Centroid(double x,
 int id,
 boolean record)

Centroid

Centroid(double x,
 int w,
 List<Double> data)

Method Details

start

private void start(double x,
 int w,
 int id)

add

public void add(double x,
 int w)

mean

public double mean()

count

public int count()

id

public int id()

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

compareTo

public int compareTo(Centroid o)

Specified by:

compareTo in interface Comparable<Centroid>

data

public List<Double> data()

insertData

public void insertData(double x)

createWeighted

public static Centroid createWeighted(double x,
 int w,
 Iterable<? extends Double> data)

add

public void add(double x,
 int w,
 Iterable<? extends Double> data)

readObject

private void readObject(ObjectInputStream in)
                 throws ClassNotFoundException,
IOException

Throws:

ClassNotFoundException

IOException