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java.lang.Objectorg.apache.commons.math.ode.RungeKuttaIntegrator
org.apache.commons.math.ode.ThreeEighthesIntegrator
public class ThreeEighthesIntegrator
This class implements the 3/8 fourth order Runge-Kutta integrator for Ordinary Differential Equations.
This method is an explicit Runge-Kutta method, its Butcher-array is the following one :
0 | 0 0 0 0 1/3 | 1/3 0 0 0 2/3 |-1/3 1 0 0 1 | 1 -1 1 0 |-------------------- | 1/8 3/8 3/8 1/8
EulerIntegrator
,
ClassicalRungeKuttaIntegrator
,
GillIntegrator
,
MidpointIntegrator
Field Summary | |
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private static double[][] |
a
Internal weights Butcher array. |
private static double[] |
b
Propagation weights Butcher array. |
private static double[] |
c
Time steps Butcher array. |
private static java.lang.String |
methodName
Integrator method name. |
Fields inherited from class org.apache.commons.math.ode.RungeKuttaIntegrator |
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switchesHandler |
Constructor Summary | |
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ThreeEighthesIntegrator(double step)
Simple constructor. |
Method Summary | |
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java.lang.String |
getName()
Get the name of the method. |
Methods inherited from class org.apache.commons.math.ode.RungeKuttaIntegrator |
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addSwitchingFunction, getCurrentSignedStepsize, getCurrentStepStart, getStepHandler, integrate, setStepHandler |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private static final java.lang.String methodName
private static final double[] c
private static final double[][] a
private static final double[] b
Constructor Detail |
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public ThreeEighthesIntegrator(double step)
step
- integration stepMethod Detail |
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public java.lang.String getName()
getName
in interface FirstOrderIntegrator
getName
in class RungeKuttaIntegrator
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