math.numerics
Class Interpolation

java.lang.Object
  math.numerics.Interpolation

public class Interpolation
extends java.lang.Object

Class Interpolation defines simple interpolation algorithms. This class cannot be subclassed or instantiated because all methods are static.

Author:

Wolfgang Christian

Method Summary

static double	legendre(double x, double[] xd, double[] yd) Legendre polynomial interpolation affineTransform a single point x.
static double	linear(double x, double x0, double x1, double y0, double y1) Linear interpolation affineTransform a single point x.

Methods inherited from class java.lang.Object

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

Method Detail

linear

public static double linear(double x,
                            double x0,
                            double x1,
                            double y0,
                            double y1)

Linear interpolation affineTransform a single point x.

Parameters:

x - double

x0 - double

x1 - double

y0 - double

y1 - double

Returns:

double

legendre

public static double legendre(double x,
                              double[] xd,
                              double[] yd)

Legendre polynomial interpolation affineTransform a single point x. Because Legendre polynomials tend to be ill behaved, this method should be used with care. A LegendrePolynomial object should be used if multiple interpolations are to be performed using the same data.

Parameters:

x - double

xd - double[] the x data

yd - double[] the y data

Returns:

double