Package com.irurueta.numerical

Class SymmetricDerivativeEstimator

java.lang.Object

com.irurueta.numerical.DerivativeEstimator

com.irurueta.numerical.SymmetricDerivativeEstimator

public class SymmetricDerivativeEstimator
extends DerivativeEstimator

Class to estimate the derivative of a single dimension function at a given point. The algorithm used in this implementation is valid for continuous functions only, otherwise inaccurate results might be obtained. This implementation is more accurate although slower than DerivativeEstimator.

Field Summary

Fields inherited from class com.irurueta.numerical.DerivativeEstimator

EPS, listener

Constructor Summary

Constructors

Constructor	Description
SymmetricDerivativeEstimator(SingleDimensionFunctionEvaluatorListener listener)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	derivative(double x)	Computes the function derivative at provided point x.

Methods inherited from class java.lang.Object

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

Constructor Details

SymmetricDerivativeEstimator

public SymmetricDerivativeEstimator(SingleDimensionFunctionEvaluatorListener listener)

Constructor.

Parameters:

listener - listener to evaluate a single dimension function.

Method Details

derivative

public double derivative(double x)
                  throws EvaluationException

Computes the function derivative at provided point x.

Overrides:

derivative in class DerivativeEstimator

Parameters:

x - Point where derivative is estimated.

Returns:

Derivative of function at provided point.

Throws:

EvaluationException - Raised if function cannot be properly evaluated.