?eval
s<- expression(log(a+b))
a<-1
b<-2
eval(s)

Andrija

On Sun, Nov 27, 2011 at 11:16 AM, Victor <vdemart@gmail.com> wrote:

> I would like to make a string executable, e.g,
>
> s<- "ln(a+b)"
> a<-1
> b<-2
>
> ???? execute string s to obtain ln(a+b) ????
>
> How can I make it?
>
> Ciao fron Rome
> Vittorio
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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