| use_method {SimEngine} | R Documentation |
Use a method
Description
This function calls the specified method, passing along any arguments that have been specified in args. It will typically be used in conjunction with the special object L to dynamically run methods that have been included as simulation levels. This function is a wrapper around do.call and is used in a similar manner. See examples.
Usage
use_method(method, args = list())
Arguments
| method | A character string naming a function that has been declared or loaded via source. |
| args | A list of arguments to be passed onto method |
Value
The result of the call to method
Examples
# The following is a toy example of a simulation, illustrating the use of
# the use_method function.
sim <- new_sim()
create_data <- function(n) { rpois(n, lambda=5) }
est_mean_1 <- function(dat) { mean(dat) }
est_mean_2 <- function(dat) { var(dat) }
sim %<>% set_levels(
"n" = c(10, 100, 1000),
"estimator" = c("est_mean_1", "est_mean_2")
)
sim %<>% set_config(num_sim=1)
sim %<>% set_script(function() {
dat <- create_data(L$n)
lambda_hat <- use_method(L$estimator, list(dat))
return (list("lambda_hat"=lambda_hat))
})
sim %<>% run()
sim$results
[Package SimEngine version 1.2.0 ]