R help - Jun 2004 - help with tclVar

Hi, I can' t load a variable tcltk declared with tclVar, why is this?, the
exmple above explain me ,Thanks Ruben
a<-tclVar(init="")
> f<-function(){
+ a<<-"pipo"
+ }
> f()
> a
[1] "pipo"
> tclvalue(a)
Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"), class "tclObj") :
        [tcl] can't read "pipo": no such
variable.
>

solares at unsl.edu.ar wrote:
> Hi, I can' t load a variable tcltk declared with tclVar, why is this?,
the
> exmple above explain me ,Thanks Ruben
> a<-tclVar(init="")
> 
>>f<-function(){
> 
> + a<<-"pipo"
> + }
> 
>>f()
>>a
> 
> [1] "pipo"
> 
>>tclvalue(a)

He? You have initialized "a" correctly at the beginning, but
overwritten
by a character vector. Now it is no longer of class "tclVar", so what
do
you expect?

I guess you are going to use something like

  tclvalue(a) <- "pipo"
  tclvalue(a)

Uwe Ligges

> Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"), class > "tclObj") :
>         [tcl] can't read "pipo": no such variable.