R help - Oct 2014 - Evaluation of global variables in function definitions

Hello (),

I'd like to do the following

a <- 3
f1 <- function (x){
 a*x^2
}

a <- 5
f2 <- function (x){
 a*x^2
}

plotting f1, f2, ...

but f1 and f2 are the same, how can I evaluated the variables in the
function definition?

Thank you
      Dieter
-- 
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany

On 07/10/2014 2:45 AM, H. Dieter Wilhelm wrote:
> Hello (),
>
> I'd like to do the following
>
> a <- 3
> f1 <- function (x){
>   a*x^2
> }
>
> a <- 5
> f2 <- function (x){
>   a*x^2
> }
>
> plotting f1, f2, ...
>
> but f1 and f2 are the same, how can I evaluated the variables in the
> function definition?
>
> Thank you
>        Dieter
See the "open.account" example in section 10.7, "Scope", of
the
Introduction to R manual.

Duncan Murdoch