Try this: y <- function(a) substitute(a * x, list(a = a))
On Thu, Oct 1, 2009 at 10:46 AM, ZeMajik <zema...@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]] > > ______________________________________________ > R-help@r-project.org mailing list > 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list 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.