| step {rodeo} | R Documentation |
Numerical Integration Over a Single Time Step
Description
Performs integration over a single time step using a built-in ODE solver. At present, a single solver is implement with limited options. The interface of this method may change when support for other solvers is added.
Arguments
t0 |
Numeric. Initial time. |
h |
Numeric. Length of time step of interest. |
hmin |
Minimum tolerated internal step size. The default of |
maxsteps |
Maximum tolerated number of sub-steps. |
tol |
Numeric. Relative accuracy requested. This is currently a global value, i.e. one cannot set the accuracy per state variable. |
method |
String. Currently, 'rk5' is the only method implemented. This is a Runge-Kutta Cash-Karp solver adapted from Press et al. (2002), Numerical recipes in Fortran 90. It is designed to handle non-stiff problems only. |
check |
Logical. Can be used to avoid repeated checks of arguments. This may increase performance in repeated calls. |
Value
A named numeric vector holding the values of state variables and process rates in all boxes.
Note
This method can only be used after a call to initStepper
has been made.
Author(s)
See Also
Use deSolve for advanced solvers with more
options and capabilities to handle stiff problems.