math.approximations
Class CubicSpline

java.lang.Object
  math.approximations.CubicSpline

All Implemented Interfaces:

Function

public class CubicSpline
extends java.lang.Object
implements Function

Constructor Summary

CubicSpline(double[] xdata, double[] ydata)
Constructs a CubicSpline interpolating function from the given data.

Method Summary

double	evaluate(double x) Computes the interpolated y value for a given x value.
void	update(double[] xdata, double[] ydata)

Methods inherited from class java.lang.Object

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

Constructor Detail

CubicSpline

public CubicSpline(double[] xdata,
                   double[] ydata)

Constructs a CubicSpline interpolating function from the given data. X data array must be sorted in increasing or decreasing value. The checkSorting method in the Util package can be used to check the sorting of an array.

Parameters:

xdata - double[]

ydata - double[]

Method Detail

update

public void update(double[] xdata,
                   double[] ydata)

evaluate

public double evaluate(double x)

Computes the interpolated y value for a given x value.

Specified by:

evaluate in interface Function

Parameters:

x -

Returns:

interpolated y value.