Package com.irurueta.numerical.interpolation

Class RadialBasisFunctionInterpolator

java.lang.Object

com.irurueta.numerical.interpolation.BaseRadialBasisFunctionInterpolator

com.irurueta.numerical.interpolation.RadialBasisFunctionInterpolator

public class RadialBasisFunctionInterpolator
extends BaseRadialBasisFunctionInterpolator

Interpolates sparsely defined points of dimension "dim" using a Radial Basis Function.

Field Summary

Fields

Modifier and Type	Field	Description
private final RadialBasisFunction	fn	Radial basis function defining a value based on the distance of two points.
private final boolean	norm	Indicates whether normalized Radial Basis Function (RBF) must be used or not.
private final com.irurueta.algebra.Matrix	w	Computed weights to compute interpolation from provided points.

Fields inherited from class com.irurueta.numerical.interpolation.BaseRadialBasisFunctionInterpolator

dim, n, pi, pts

Constructor Summary

Constructors

Constructor	Description
RadialBasisFunctionInterpolator(com.irurueta.algebra.Matrix ptss, double[] valss, RadialBasisFunction func)	Constructor.
RadialBasisFunctionInterpolator(com.irurueta.algebra.Matrix ptss, double[] valss, RadialBasisFunction func, boolean nrbf)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	interpolate(double[] pt)	Returns the interpolated function value at a dim-dimensional point pt.

Methods inherited from class com.irurueta.numerical.interpolation.BaseRadialBasisFunctionInterpolator

rad

Methods inherited from class java.lang.Object

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

Field Details

w

private final com.irurueta.algebra.Matrix w

Computed weights to compute interpolation from provided points.

fn

private final RadialBasisFunction fn

Radial basis function defining a value based on the distance of two points.

norm

private final boolean norm

Indicates whether normalized Radial Basis Function (RBF) must be used or not.

Constructor Details

RadialBasisFunctionInterpolator

public RadialBasisFunctionInterpolator(com.irurueta.algebra.Matrix ptss,
 double[] valss,
 RadialBasisFunction func,
 boolean nrbf)
                                throws InterpolationException

Constructor.

Parameters:

ptss - Matrix containing points to interpolate from. Each row contains one point. Matrix will have n points (rows) having a dimension (columns) equal to dim.

valss - values of function at provided points. Must have the same length as the number of rows of provided points matrix.

func - function to be used as Radial Basis Function (RBF).

nrbf - true to normalize RBF, false otherwise.

Throws:

InterpolationException - if provided points are redundant and result in a degenerate solution.

IllegalArgumentException - if provided values array does not match the number of points (rows) in provided matrix.

RadialBasisFunctionInterpolator

public RadialBasisFunctionInterpolator(com.irurueta.algebra.Matrix ptss,
 double[] valss,
 RadialBasisFunction func)
                                throws InterpolationException

Constructor.

Parameters:

ptss - Matrix containing points to interpolate from. Each row contains one point. Matrix will have n points (rows) having a dimension (columns) equal to dim.

valss - values of function at provided points. Must have the same length as the number of rows of provided points matrix.

func - function to be used as Radial Basis Function (RBF).

Throws:

InterpolationException - if provided points are redundant and result in a degenerate solution.

IllegalArgumentException - if provided values array does not match the number of points (rows) in provided matrix.

Method Details

interpolate

public double interpolate(double[] pt)

Returns the interpolated function value at a dim-dimensional point pt.

Specified by:

interpolate in class BaseRadialBasisFunctionInterpolator

Parameters:

pt - dim-dimensional point where interpolation must be computed.

Returns:

result of interpolation.

Throws:

IllegalArgumentException - if provided point has an invalid length.