Package pl.poznan.put.circular.samples

Class TrigonometricMoment

java.lang.Object

pl.poznan.put.circular.samples.TrigonometricMoment

Direct Known Subclasses:

ImmutableTrigonometricMoment

@Immutable
public abstract class TrigonometricMoment
extends Object

A quantitative measure of a trigonometric sample shape.

Constructor Summary

Constructors

Constructor	Description
TrigonometricMoment()

Method Summary

Modifier and Type	Method	Description
static TrigonometricMoment	computeCentered(Collection<Angle> data, int p, Angle theta)	Computes a centered moment i.e. relative to the mean value in the sample.
static TrigonometricMoment	computeUncentered(Collection<Angle> data, int p)	Computes an uncentered moment i.e. from the data points not relative to any specific point.
abstract Angle	meanDirection()
abstract double	meanResultantLength()

Methods inherited from class java.lang.Object

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

Constructor Details

TrigonometricMoment

public TrigonometricMoment()

Method Details

computeUncentered

public static TrigonometricMoment computeUncentered(Collection<Angle> data,
 int p)

Computes an uncentered moment i.e. from the data points not relative to any specific point.

Parameters:

data - A collection of angular values.

p - A p-th moment to be calculated.

Returns:

The p-th uncentered trigonometric moment of the sample.

computeCentered

public static TrigonometricMoment computeCentered(Collection<Angle> data,
 int p,
 Angle theta)

Computes a centered moment i.e. relative to the mean value in the sample.

Parameters:

data - A collection of angular values.

p - A p-th moment to be calculated.

theta - The mean value in the sample

Returns:

The p-th centered trigonometric moment of the sample.

meanDirection

@Parameter(order=1)
public abstract Angle meanDirection()

Returns:

The mean direction.

meanResultantLength

@Parameter(order=2)
public abstract double meanResultantLength()

Returns:

The length of the vector representing the mean direction.