R help - Jan 2009 - getting caller's environment

Hello,

I'm writing a function like this:

f<-function(x,y,...) {
...
assign(x,y,envir=?)
}

I need the caller (of f) 's environment for the "?" so that the
assignment is done at the right place. To be specific, when the code
"f(x,1)" appears in environment A, I need the assignment of 1 to x
happen in environment A. So my question is how to get the correct
environment?

Thanks for any suggestions!

Try this:

f <- function(env = parent.frame()) env$x
g <- function(x=1) f()
x <- 2
g() # 1

On Wed, Jan 21, 2009 at 5:45 PM, Yi Zhang <yizhang84 at gmail.com>
wrote:
> Hello,
>
> I'm writing a function like this:
>
> f<-function(x,y,...) {
> ...
> assign(x,y,envir=?)
> }
>
> I need the caller (of f) 's environment for the "?" so that
the
> assignment is done at the right place. To be specific, when the code
> "f(x,1)" appears in environment A, I need the assignment of 1 to
x
> happen in environment A. So my question is how to get the correct
> environment?
>
> Thanks for any suggestions!
>
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