org.apache.commons.math.analysis.interpolation

Class DividedDifferenceInterpolator

java.lang.Object

org.apache.commons.math.analysis.interpolation.DividedDifferenceInterpolator

All Implemented Interfaces:

java.io.Serializable, UnivariateRealInterpolator

public class DividedDifferenceInterpolator
extends java.lang.Object
implements UnivariateRealInterpolator, java.io.Serializable

Implements the Divided Difference Algorithm for interpolation of real univariate functions. For reference, see Introduction to Numerical Analysis, ISBN 038795452X, chapter 2.

The actual code of Neville's evaluation is in PolynomialFunctionLagrangeForm, this class provides an easy-to-use interface to it.

Since:

1.2

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DividedDifferenceInterpolator()

Method Summary

Modifier and Type	Method and Description
PolynomialFunctionNewtonForm	interpolate(double[] x, double[] y) Computes an interpolating function for the data set.

Methods inherited from class java.lang.Object

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

Constructor Detail

DividedDifferenceInterpolator

public DividedDifferenceInterpolator()

Method Detail

interpolate

public PolynomialFunctionNewtonForm interpolate(double[] x,
                                                double[] y)
                                         throws DuplicateSampleAbscissaException

Computes an interpolating function for the data set.

Specified by:

interpolate in interface UnivariateRealInterpolator

Parameters:

x - the interpolating points array

y - the interpolating values array

Returns:

a function which interpolates the data set

Throws:

DuplicateSampleAbscissaException - if arguments are invalid