parms {simecol}R Documentation

Accessor Functions for 'simObj' Objects

Description

Get or set simulation model parameters, main or sub-equations, initial values, time steps or solvers and extract simulation results.

Usage

   parms(obj, ...)
   parms(obj) <- value

   main(obj, ...)
   main(obj) <- value

   equations(obj, ...)
   equations(obj) <- value

   init(obj, ...)
   init(obj) <- value

   inputs(obj, ...)
   inputs(obj) <- value

   times(obj, ...)
   times(obj) <- value

   solver(obj, ...)
   solver(obj) <- value
   
   initfunc(obj, ...)
   initfunc(obj) <- value

   out(obj, ...)
   out(obj, ...)

Arguments

obj A valid simObj instance.
value Named list, vector, function or other data structure (depending on the slot and model class) with the same structure as the value returned by parms. Either all or a subset of values (e.g. single elements of vectors or lists) can be changed at once.
... Reserved for method consistency.

Details

These are the accessing functions for parms, times etc. Please take care of the semantics of your model when changing slots. All, element names, data structure and values have to correspond to you model object definition. For example in init the applied names must exactly correspond to the names and number (!) of state variables. The restrictions of parms or equations are less strict (additional values for ``future use'' are allowed). The function times allows either to assign or to modify a special vector with three elements named from, to and by or to overwrite times with an un-named sequence (e.g. seq(1, 100, 0.1).

Value

A list, named vector, matrix or function (for main slot) or list of functions (equation slot) or other appropriate data structure depending on the class of the model object.

See Also

simecol-package.

Examples

    data(lv)
    parms(lv)
    parms(lv)       <- c(k1=0.2, k2=0.5, k1=0.3)
    parms(lv)["k2"] <- 0.5

    data(conway)
    parms(conway)
    parms(conway)$srv <- c(2, 2)
    parms(conway)

    # add a new named parameter value
    parms(lv)["dummy"] <- 1
    # remove dummy parameter
    parms(lv) <- parms(lv)[names(parms(lv)) != "dummy"]

[Package simecol version 0.5 Index]