[R] Arguments of a function

[Henrique Dallazuanna]

Try this:

my.f <- function(a, b) {
	x1 <- 2 * 3
      x2 <- 3 / 6
      x3 <- 4 * 4 / 5 - sqrt(2)
	y <- get(deparse(substitute(a))) + get(deparse(substitute(b)))
	return(y)
}

my.f(x1, x2)

On Fri, Jan 8, 2010 at 4:15 PM, Lisa <lisajca at gmail.com> wrote:
>
> Dear all,
>
> I have a question about how to set arguments in my own function. For
> example, I have a function that looks like this:
>
> my.f <- function(a = x1, b = x2)
> {
>   x1 = equation 1
>   x2 = equation 2
>   x3 = equation 3
>   y = a + b
> }
>
> x1, x2, and x3 are temporary variables (intermediate results) calculated
> from other variables within the funciton. I want to use two of these three
> variables to calculate y, and write R script as below:
>
> my.f(a = x1, b = x2)
>
> or
>
> my.f(a = x2, b = x3)
>
> The error information shows that: “objects 'x1', 'x2', or 'x3' not found”.
>
> Can anybody help me solve this problem? Thanks in advance.
>
> Lisa
>
> --
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> Sent from the R help mailing list archive at Nabble.com.
>
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>



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