Class LutherFieldStepInterpolator<T extends RealFieldElement<T>>
java.lang.Object
org.apache.commons.math3.ode.sampling.AbstractFieldStepInterpolator<T>
org.apache.commons.math3.ode.nonstiff.RungeKuttaFieldStepInterpolator<T>
org.apache.commons.math3.ode.nonstiff.LutherFieldStepInterpolator<T>
- Type Parameters:
T
- the type of the field elements
- All Implemented Interfaces:
FieldStepInterpolator<T>
class LutherFieldStepInterpolator<T extends RealFieldElement<T>>
extends RungeKuttaFieldStepInterpolator<T>
This class represents an interpolator over the last step during an
ODE integration for the 6th order Luther integrator.
This interpolator computes dense output inside the last step computed. The interpolation equation is consistent with the integration scheme.
- Since:
- 3.6
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final T
-49 - 49 q.private final T
392 + 287 q.private final T
-637 - 357 q.private final T
833 + 343 q.private final T
-49 + 49 q.private final T
-392 - 287 q.private final T
-637 + 357 q.private final T
833 - 343 q.private final T
49 + 49 q.private final T
-1372 - 847 q.private final T
2254 + 1029 qprivate final T
49 - 49 q.private final T
-1372 + 847 q.private final T
2254 - 1029 q -
Constructor Summary
ConstructorsConstructorDescriptionLutherFieldStepInterpolator
(Field<T> field, boolean forward, T[][] yDotK, FieldODEStateAndDerivative<T> globalPreviousState, FieldODEStateAndDerivative<T> globalCurrentState, FieldODEStateAndDerivative<T> softPreviousState, FieldODEStateAndDerivative<T> softCurrentState, FieldEquationsMapper<T> mapper) Simple constructor. -
Method Summary
Modifier and TypeMethodDescriptionprotected FieldODEStateAndDerivative
<T> computeInterpolatedStateAndDerivatives
(FieldEquationsMapper<T> mapper, T time, T theta, T thetaH, T oneMinusThetaH) Compute the state and derivatives at the interpolated time.protected LutherFieldStepInterpolator
<T> create
(Field<T> newField, boolean newForward, T[][] newYDotK, FieldODEStateAndDerivative<T> newGlobalPreviousState, FieldODEStateAndDerivative<T> newGlobalCurrentState, FieldODEStateAndDerivative<T> newSoftPreviousState, FieldODEStateAndDerivative<T> newSoftCurrentState, FieldEquationsMapper<T> newMapper) Create a new instance.Methods inherited from class org.apache.commons.math3.ode.nonstiff.RungeKuttaFieldStepInterpolator
create, currentStateLinearCombination, derivativeLinearCombination, previousStateLinearCombination
Methods inherited from class org.apache.commons.math3.ode.sampling.AbstractFieldStepInterpolator
getCurrentState, getGlobalCurrentState, getGlobalPreviousState, getInterpolatedState, getPreviousState, isForward, restrictStep
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Field Details
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c5a
-49 - 49 q. -
c5b
392 + 287 q. -
c5c
-637 - 357 q. -
c5d
833 + 343 q. -
c6a
-49 + 49 q. -
c6b
-392 - 287 q. -
c6c
-637 + 357 q. -
c6d
833 - 343 q. -
d5a
49 + 49 q. -
d5b
-1372 - 847 q. -
d5c
2254 + 1029 q -
d6a
49 - 49 q. -
d6b
-1372 + 847 q. -
d6c
2254 - 1029 q
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-
Constructor Details
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LutherFieldStepInterpolator
LutherFieldStepInterpolator(Field<T> field, boolean forward, T[][] yDotK, FieldODEStateAndDerivative<T> globalPreviousState, FieldODEStateAndDerivative<T> globalCurrentState, FieldODEStateAndDerivative<T> softPreviousState, FieldODEStateAndDerivative<T> softCurrentState, FieldEquationsMapper<T> mapper) Simple constructor.- Parameters:
field
- field to which the time and state vector elements belongforward
- integration direction indicatoryDotK
- slopes at the intermediate pointsglobalPreviousState
- start of the global stepglobalCurrentState
- end of the global stepsoftPreviousState
- start of the restricted stepsoftCurrentState
- end of the restricted stepmapper
- equations mapper for the all equations
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Method Details
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create
protected LutherFieldStepInterpolator<T> create(Field<T> newField, boolean newForward, T[][] newYDotK, FieldODEStateAndDerivative<T> newGlobalPreviousState, FieldODEStateAndDerivative<T> newGlobalCurrentState, FieldODEStateAndDerivative<T> newSoftPreviousState, FieldODEStateAndDerivative<T> newSoftCurrentState, FieldEquationsMapper<T> newMapper) Create a new instance.- Specified by:
create
in classRungeKuttaFieldStepInterpolator<T extends RealFieldElement<T>>
- Parameters:
newField
- field to which the time and state vector elements belongnewForward
- integration direction indicatornewYDotK
- slopes at the intermediate pointsnewGlobalPreviousState
- start of the global stepnewGlobalCurrentState
- end of the global stepnewSoftPreviousState
- start of the restricted stepnewSoftCurrentState
- end of the restricted stepnewMapper
- equations mapper for the all equations- Returns:
- a new instance
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computeInterpolatedStateAndDerivatives
protected FieldODEStateAndDerivative<T> computeInterpolatedStateAndDerivatives(FieldEquationsMapper<T> mapper, T time, T theta, T thetaH, T oneMinusThetaH) Compute the state and derivatives at the interpolated time. This is the main processing method that should be implemented by the derived classes to perform the interpolation.- Specified by:
computeInterpolatedStateAndDerivatives
in classAbstractFieldStepInterpolator<T extends RealFieldElement<T>>
- Parameters:
mapper
- mapper for ODE equations primary and secondary componentstime
- interpolation timetheta
- normalized interpolation abscissa within the step (theta is zero at the previous time step and one at the current time step)thetaH
- time gap between the previous time and the interpolated timeoneMinusThetaH
- time gap between the interpolated time and the current time- Returns:
- interpolated state and derivatives
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