Hi all, I have a somewhat confusing question that I was wondering if someone could help with. I have a pre-defined environment with some variables, and I would like to define a function, such that when it is called, it actually manipulates the variables in that environment, leaving them to be examined later. I see from the R language definition that
"When a function is called, a new environment (called the evaluation environment) is created, whose enclosure (see Environment objects) is the environment from the function closure. This new environment is initially populated with the unevaluated arguments to the function; as evaluation proceeds, local variables are created within it." So basically, I think I am asking if it is possible to pre-create my own "evaluation environment" and have it retain the state that it was in at the end of the function call? Example: e <- new.env() e$x <- 3 f <- function(xx) x <- x + xx can I then call f(2) and have it leave e$x at 5 after the function returns? I know that environment(f) <- e goes part of the way, but I would like to let the function also write to the environment. Thanks for any advice. --David ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
