numRecipes

Class Integration

java.lang.Object

numRecipes.Integration

public class Integration
extends java.lang.Object

Utilities for Numerical Integration. Some of them are based on the Numerical Recipes Library. The interface class Function is required to call the member in this class

Constructor Summary

Constructors

Constructor and Description
Integration()

Method Summary

Methods

Modifier and Type	Method and Description
static void	initializeStaticVariables() Initialize the static variables such as grandSum.
static double	iterateTrapzd(Function func, int functionIndex, double[] parameters, double lowerBound, double upperBound, int iterationTimes) Iterated Trapzd integraion method.
static double	RombergIntegral(Function func, int functionIndex, double[] parameters, double lowerBound, double upperBound) The Romberg method.
static void	setRelativeAccuracy(double epsilon) Change the relative accuracy in the inegration
static double	trapzd(Function func, int functionIndex, double[] parameters, double lowerBound, double upperBound, int iterationTimes) Trapzd integraion method.

Methods inherited from class java.lang.Object

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

Constructor Detail

Integration

public Integration()

Method Detail

trapzd

public static double trapzd(Function func,
            int functionIndex,
            double[] parameters,
            double lowerBound,
            double upperBound,
            int iterationTimes)

Trapzd integraion method. This is the fundamenthal method for more advanced integration. Integration blacket [lowerBound upperBound]

iterateTrapzd

public static double iterateTrapzd(Function func,
                   int functionIndex,
                   double[] parameters,
                   double lowerBound,
                   double upperBound,
                   int iterationTimes)

Iterated Trapzd integraion method. This is the fundamenthal method for more advanced integration. Integration blacket [lowerBound upperBound]

RombergIntegral

public static double RombergIntegral(Function func,
                     int functionIndex,
                     double[] parameters,
                     double lowerBound,
                     double upperBound)

The Romberg method. This is the fundamenthal method for more advanced integration./ Integration blacket [lowerBound upperBound]

initializeStaticVariables

public static void initializeStaticVariables()

Initialize the static variables such as grandSum. This may have to be called when different classes utilize this class at same time.

setRelativeAccuracy

public static void setRelativeAccuracy(double epsilon)

Change the relative accuracy in the inegration