[R] How define global Variable?

[Dimitris Rizopoulos]

try

a <- "old"
test <- function () { assign("a", "new", envir = .GlobalEnv) }
test()
a


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: <svenknueppel at reilich.net>
To: <r-help at stat.math.ethz.ch>
Sent: Monday, November 28, 2005 3:26 PM
Subject: [R] How define global Variable?


> Hello,
>
> I try to define a global variable.
>
> My example:
>
> R> a <- "old"
> R> test <- function () { a <- "new" }
> R> test()
> R> a # shoud be "new"
>
> This doesn't work. I would like to modify the variable "a" in a
> procedure. How can I do that.
>
> Thank you for helping.
>
> Sven Knüppel (Germany-Berlin)
>
>


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