[R] Transforming a string into a command

[Michael Kao]

This is one way to do it.

a = 1
b = 2
c = parse(text = "log(a + b)")
eval(c)

Hope this helps.

Cheers,

On 27/11/2011 11:16 a.m., Victor 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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