[R] Re-assigning variables stored as character strings in another variable

[Henrique Dallazuanna]

See ?get and ?assign

On Mon, Feb 22, 2010 at 4:49 PM, Anthony Damico <ajdamico at gmail.com> wrote:
> Is there any way to get the last line of this code to double the contents of
> a and b without naming them directly?
>
> #create variables a and b
> a<-5
> b<-10
>
> #store variable names a and b in variables c and d
> c<-"a"
> d<-"b"
>
> e<-c(c,d)
>
> #loop through both variables
> for (i in e){
>
> #print the numbers five and ten using only the variables c and d
> #this line works fine
> print(eval(parse(text=i)))*2
>
> #re-assign variables a and b using only variables c and d
> #this line does not work -
> parse(text=i) <- eval(parse(text=i))*2
> }
>
>        [[alternative HTML version deleted]]
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O