Arguments of a function
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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