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public interface ExtendedFirstOrderDifferentialEquations
This interface represents a first order differential equations set with a main set of equations and an extension set.
This interface is a simple extension on the FirstOrderDifferentialEquations
that allows to identify which part
of a complete set of differential equations correspond to the main
set and which part correspond to the extension set.
One typical use case is the computation of Jacobians. The main
set of equations correspond to the raw ode, and we add to this set
another bunch of equations which represent the jacobians of the
main set. In that case, we want the integrator to use only
the main set to estimate the errors and hence the step sizes. It should
not use the additional equations in this computation. If the
complete ode implements this interface, the integrator
will be able to know where the main set ends and where the
extended set begins.
We consider that the main set always corresponds to the first equations and the extended set to the last equations.
FirstOrderDifferentialEquations
Method Summary  

int 
getMainSetDimension()
Return the dimension of the main set of equations. 
Methods inherited from interface org.apache.commons.math.ode.FirstOrderDifferentialEquations 

computeDerivatives, getDimension 
Method Detail 

int getMainSetDimension()
The main set of equations represent the first part of an ODE state. The error estimations and adaptive step size computation should be done on this first part only, not on the final part of the state which represent an extension set of equations which are considered secondary.
total dimension


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