org.apache.commons.math.analysis.integration

Class TrapezoidIntegrator

java.lang.Object

org.apache.commons.math.ConvergingAlgorithmImpl

org.apache.commons.math.analysis.integration.UnivariateRealIntegratorImpl

org.apache.commons.math.analysis.integration.TrapezoidIntegrator

All Implemented Interfaces:

UnivariateRealIntegrator, ConvergingAlgorithm

public class TrapezoidIntegrator
extends UnivariateRealIntegratorImpl

Implements the Trapezoidal Rule for integration of real univariate functions. For reference, see Introduction to Numerical Analysis, ISBN 038795452X, chapter 3.

The function should be integrable.

Since:

1.2

Constructor Summary

Constructors

Constructor and Description
TrapezoidIntegrator() Construct an integrator.
TrapezoidIntegrator(UnivariateRealFunction f) Deprecated. as of 2.0 the integrand function is passed as an argument to the integrate(UnivariateRealFunction, double, double)method.

Method Summary

Modifier and Type	Method and Description
double	integrate(double min, double max) Deprecated.
double	integrate(UnivariateRealFunction f, double min, double max) Integrate the function in the given interval.

Methods inherited from class org.apache.commons.math.analysis.integration.UnivariateRealIntegratorImpl

getMinimalIterationCount, getResult, resetMinimalIterationCount, setMinimalIterationCount

Methods inherited from class org.apache.commons.math.ConvergingAlgorithmImpl

getAbsoluteAccuracy, getIterationCount, getMaximalIterationCount, getRelativeAccuracy, resetAbsoluteAccuracy, resetMaximalIterationCount, resetRelativeAccuracy, setAbsoluteAccuracy, setMaximalIterationCount, setRelativeAccuracy

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.math.ConvergingAlgorithm

getAbsoluteAccuracy, getIterationCount, getMaximalIterationCount, getRelativeAccuracy, resetAbsoluteAccuracy, resetMaximalIterationCount, resetRelativeAccuracy, setAbsoluteAccuracy, setMaximalIterationCount, setRelativeAccuracy

Constructor Detail

TrapezoidIntegrator

@Deprecated
public TrapezoidIntegrator(UnivariateRealFunction f)

Deprecated. as of 2.0 the integrand function is passed as an argument to the integrate(UnivariateRealFunction, double, double)method.

Construct an integrator for the given function.

Parameters:

f - function to integrate

TrapezoidIntegrator

public TrapezoidIntegrator()

Construct an integrator.

Method Detail

integrate

@Deprecated
public double integrate(double min,
                                    double max)
                             throws MaxIterationsExceededException,
                                    FunctionEvaluationException,
                                    java.lang.IllegalArgumentException

Deprecated.

Integrate the function in the given interval.

Parameters:

min - the lower bound for the interval

max - the upper bound for the interval

Returns:

the value of integral

Throws:

FunctionEvaluationException - if an error occurs evaluating the function

java.lang.IllegalArgumentException - if min > max or the endpoints do not satisfy the requirements specified by the integrator

MaxIterationsExceededException

integrate

public double integrate(UnivariateRealFunction f,
                        double min,
                        double max)
                 throws MaxIterationsExceededException,
                        FunctionEvaluationException,
                        java.lang.IllegalArgumentException

Integrate the function in the given interval.

Parameters:

f - the integrand function

min - the lower bound for the interval

max - the upper bound for the interval

Returns:

the value of integral

Throws:

FunctionEvaluationException - if an error occurs evaluating the function

java.lang.IllegalArgumentException - if min > max or the endpoints do not satisfy the requirements specified by the integrator

MaxIterationsExceededException