org.apache.commons.math.analysis.interpolation

Class MicrosphereInterpolatingFunction

java.lang.Object

org.apache.commons.math.analysis.interpolation.MicrosphereInterpolatingFunction

All Implemented Interfaces:

MultivariateRealFunction

public class MicrosphereInterpolatingFunction
extends java.lang.Object
implements MultivariateRealFunction

Interpolating function that implements the Microsphere Projection.

Constructor Summary

Constructors

Constructor and Description
MicrosphereInterpolatingFunction(double[][] xval, double[] yval, int brightnessExponent, int microsphereElements, UnitSphereRandomVectorGenerator rand)

Method Summary

Modifier and Type	Method and Description
double	value(double[] point) Compute the value for the function at the given point.

Methods inherited from class java.lang.Object

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

Constructor Detail

MicrosphereInterpolatingFunction

public MicrosphereInterpolatingFunction(double[][] xval,
                                        double[] yval,
                                        int brightnessExponent,
                                        int microsphereElements,
                                        UnitSphereRandomVectorGenerator rand)
                                 throws DimensionMismatchException,
                                        NoDataException

Parameters:

xval - the arguments for the interpolation points. xval[i][0] is the first component of interpolation point i, xval[i][1] is the second component, and so on until xval[i][d-1], the last component of that interpolation point (where dimension is thus the dimension of the sampled space).

yval - the values for the interpolation points

brightnessExponent - Brightness dimming factor.

microsphereElements - Number of surface elements of the microsphere.

rand - Unit vector generator for creating the microsphere.

Throws:

DimensionMismatchException - if the lengths of yval and xval (equal to n, the number of interpolation points) do not match, or the the arrays xval[0] ... xval[n], have lengths different from dimension.

NoDataException - if there are no data (xval null or zero length)

Method Detail

value

public double value(double[] point)

Description copied from interface: MultivariateRealFunction

Compute the value for the function at the given point.

Specified by:

value in interface MultivariateRealFunction

Parameters:

point - Interpolation point.

Returns:

the interpolated value.