[R] Treating variables as symbols

[Henrique Dallazuanna]

Try this:

y <- function(a)
	substitute(a * x, list(a = a))

On Thu, Oct 1, 2009 at 10:46 AM, ZeMajik <zemajik at gmail.com> wrote:
> Hey,
> I'm trying to find how to perform operations with a variable treated as a
> symbol.
> For, an extremely simple, example I want to integrate a*x with respect to x
> and I want to find the indefinite integral of this, (a*x^2/2), or the
> definite integral with some interval for x.
>
> Another example of such a use would be to create a function
> y<-function(x) {a*x}
> and by typig y(2) I would get the result 2*a
>
> Is there a way to treat variables as merely "symbols"?
> Any help much appreciated
>
> -M
>
>        [[alternative HTML version deleted]]
>
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>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O