Package adams.data

Class InterpolationUtils

java.lang.Object

adams.data.InterpolationUtils

public class InterpolationUtils
extends Object

Helper class for interpolation.

Version:

$Revision$

Author:

FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
InterpolationUtils()

Method Summary

Modifier and Type	Method	Description
static double	interpolate(double x, double xLeft, double yLeft, double xRight, double yRight)	Interpolates the Y value for a given X and the surrounding x/y pairs.
static double	interpolate(double x, double xLeft, double yLeft, double xRight, double yRight, double[] weights)	Interpolates the Y value for a given X and the surrounding x/y pairs.
static double[]	weights(double x, double xLeft, double xRight)	Calculates the interpolation weights for the left and right X.

Methods inherited from class java.lang.Object

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

Constructor Detail

InterpolationUtils

public InterpolationUtils()

Method Detail

weights

public static double[] weights(double x,
                               double xLeft,
                               double xRight)

Calculates the interpolation weights for the left and right X.

Parameters:

x - the X to calculate the interpolation weights

xLeft - the X to the left

xRight - the X to the right

Returns:

the weights (left=0, right=1)

interpolate

public static double interpolate(double x,
                                 double xLeft,
                                 double yLeft,
                                 double xRight,
                                 double yRight,
                                 double[] weights)

Interpolates the Y value for a given X and the surrounding x/y pairs.

Parameters:

x - the X to generate the interpolated Y for

xLeft - the X to the left

yLeft - the Y to the left

xRight - the X to the right

yRight - the Y to the right

weights - array of length 2 to store the weights in (left/right)

Returns:

the interpolated Y

interpolate

public static double interpolate(double x,
                                 double xLeft,
                                 double yLeft,
                                 double xRight,
                                 double yRight)

Interpolates the Y value for a given X and the surrounding x/y pairs.

Parameters:

x - the X to generate the interpolated Y for

xLeft - the X to the left

yLeft - the Y to the left

xRight - the X to the right

yRight - the Y to the right

Returns:

the interpolated Y