[R] Treating variables as symbols
Henrique Dallazuanna
wwwhsd at gmail.com
Thu Oct 1 15:53:47 CEST 2009
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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> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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