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)