org.esa.snap.core.util.math

Class FXYSum.BiLinear

java.lang.Object

org.esa.snap.core.util.math.FXYSum

org.esa.snap.core.util.math.FXYSum.BiLinear

Enclosing class:

FXYSum

public static final class FXYSum.BiLinear
extends FXYSum

Provides an optimized computeZ method for bi-linear polynomials (order = 1+1).

See Also:

FXYSum.FXY_BI_LINEAR

Nested Class Summary

Nested classes/interfaces inherited from class org.esa.snap.core.util.math.FXYSum

FXYSum.BiCubic, FXYSum.BiLinear, FXYSum.BiQuadric, FXYSum.Cubic, FXYSum.Linear, FXYSum.Quadric

Field Summary

Fields inherited from class org.esa.snap.core.util.math.FXYSum

FXY_4TH, FXY_BI_4TH, FXY_BI_CUBIC, FXY_BI_LINEAR, FXY_BI_QUADRATIC, FXY_CUBIC, FXY_LINEAR, FXY_QUADRATIC

Constructor Summary

Constructors

Constructor and Description
BiLinear()
BiLinear(double[] coefficients)

Method Summary

Modifier and Type	Method and Description
double	computeZ(double x, double y) Computes this sum of function terms z(x,y) = sum(c[i] * f[i](x,y), i=0, n-1).

Methods inherited from class org.esa.snap.core.util.math.FXYSum

appendCFunctionCodeBody, appendCFunctionCodeEnd, appendCFunctionCodePart, appendCFunctionCodeStart, approximate, computeZ, createCFunctionCode, createCopy, createFXYSum, getCoefficients, getFunctions, getMaxError, getNumTerms, getOrder, getRootMeanSquareError

Methods inherited from class java.lang.Object

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

Constructor Detail

BiLinear

public BiLinear()

BiLinear

public BiLinear(double[] coefficients)

Method Detail

computeZ

public double computeZ(double x,
                       double y)

Description copied from class: FXYSum

Computes this sum of function terms z(x,y) = sum(c[i] * f[i](x,y), i=0, n-1). The method will return zero unless the FXYSum.approximate(double[][], int[]) is called in order to set the coefficient vector c.

Overrides:

computeZ in class FXYSum

Parameters:

x - the x value

y - the y value

Returns:

the z value

See Also:

FXYSum.computeZ(FXY[], double[], double, double)