R help - Aug 2008 - environments

Hi there,

I try to understand the usage of environments but I'm not sure if I get it.
I
wrote a test script like this:

testenv <- new.env(environment())

myfun <- function(x) {
	print(testvar)
	testenv$testvar_2 <- 20
}
environment(myfun) <- testenv

testenv$testvar <- 10
myfun("hello")
ls(envir = testenv)

Now, I was wondering if there is any way to create new variables in my 
environment without this "testenv$...". I know that I can access it
that way if
I do an attach(testenv) before, but that does not help when creating new ones...
Do I completely misunderstand the concept?
I'm just looking for an elegant way to access objects of a graphical 
userinterface from each handler-function and so on. And I thought it might be 
good to pack them into an environment...

Antje

I think you need assign, see ?assign for more details.

On Tue, Aug 26, 2008 at 6:02 AM, Antje <niederlein-rstat at yahoo.de>
wrote:
> Hi there,
>
> I try to understand the usage of environments but I'm not sure if I get
it.
> I wrote a test script like this:
>
> testenv <- new.env(environment())
>
> myfun <- function(x) {
>        print(testvar)
>        testenv$testvar_2 <- 20
> }
> environment(myfun) <- testenv
>
> testenv$testvar <- 10
> myfun("hello")
> ls(envir = testenv)
>
> Now, I was wondering if there is any way to create new variables in my
> environment without this "testenv$...". I know that I can access
it that way
> if I do an attach(testenv) before, but that does not help when creating new
> ones...
> Do I completely misunderstand the concept?
> I'm just looking for an elegant way to access objects of a graphical
> userinterface from each handler-function and so on. And I thought it might
> be good to pack them into an environment...
>
> Antje
>
> ______________________________________________
> R-help at 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.
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O