| rk4 {simecol} | R Documentation |
Solving initial value problems for
systems of first-order ordinary differential equations
(ODEs) using the classical Runge-Kutta 4th order integration. This is
a special version designed to work with odeModel objects.
rk4(y, times, func, parms, ...) # rk4(y)
y |
The odeModel object to be solved. |
times |
Placeholder for compatibility with the odesolve package |
func |
Placeholder for compatibility with the odesolve package |
parms |
Placeholder for compatibility with the odesolve package |
... |
Additional parameters, reserved for extensions |
The solver method rk4 is used to simulate ODE
models. It creates a local environment in a way that parameters,
inputs and equations are visible within the main function of the
odeModel.
Normally, this function is called indirectly from sim.
A list of the model outputs (states ...) for all timesteps.
sim,
parms
lsoda,
euler,
iteration,
original rk4 from the odesolve package.
# ordinary usage
data(lv)
solver(lv) <- "rk4"
plot(sim(lv))
# alternative usage
rk4(lv)