Package smile.interpolation

Class CubicSplineInterpolation2D

java.lang.Object

smile.interpolation.CubicSplineInterpolation2D

All Implemented Interfaces:

Serializable, Interpolation2D

public class CubicSplineInterpolation2D
extends Object
implements Interpolation2D

Cubic spline interpolation in a two-dimensional regular grid. It is similar to one-dimensional splines as it guarantees the continuity of the first and second function derivatives. Note that bicubic spline guarantees continuity of only gradient and cross-derivative.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CubicSplineInterpolation2D(double[] x1, double[] x2, double[][] y)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	interpolate(double x1p, double x2p)	Interpolate the data at a given 2-dimensional point.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

CubicSplineInterpolation2D

public CubicSplineInterpolation2D(double[] x1,
 double[] x2,
 double[][] y)

Constructor.

Parameters:

x1 - the 1st dimension of data points.

x2 - the 2nd dimension of data points.

y - the function values at (x1, x2).

Method Details

interpolate

public double interpolate(double x1p,
 double x2p)

Description copied from interface: Interpolation2D

Interpolate the data at a given 2-dimensional point.

Specified by:

interpolate in interface Interpolation2D

Parameters:

x1p - the 1st dimension value.

x2p - the 2nd dimension value.

Returns:

the interpolated function value.

toString

public String toString()

Overrides:

toString in class Object