simecol (version 0.3-11)

addtoenv: Add functions from a non-nested list of named functions to a common environment

Description

Create and set an environment where functions within a non-nested named list of functions see each other. This function is normally used within other functions, in particular solvers of the simecol package.

Usage

addtoenv(L, p=parent.frame())

Arguments

L

a non-nested list of named functions.

p

the environment where the functions are assigned to. Defaults to the parent frame.

Value

• The list of equations within a common environment.

Details

This function is normally called indirectly by `solver functions' and from initialize functions (constructors) of simObjects.

See Also

rk4, iteration, odeModel

Examples

eq <- list(f1 = function(x, y)    x + y,
           f2 = function(a, x, y) a * f1(x, y)
          )

fx <- function(eq) {
  eq <- addtoenv(eq)
  print(ls())
  print(environment(eq$f1))
  f1(3,4) + f2(1,2,3)
}

fx(eq)
# eq$f2(2,3,4)       # should give an error outside fx
environment(eq$f2)   # should return R_GlobalEnv again