Try:
ftest <- function(x1, ...) {
yargs =list(...) ;
if (hasArg(y2) == TRUE) print("YES");
return(yargs)
}
> ftest(2, y2 = 3)
[1] "YES"
$y2
[1] 3
> yt <- ftest(2, y2=3)
[1] "YES"
> yt
$y2
[1] 3
On Dec 22, 2008, at 6:16 PM, Mark Heckmann wrote:
Hi r-experts,
I want to check if a certain argument has been passed on in a
function call
via ...
ftest <- function(x1, ...) {
if(hasArg(y2)==TRUE) print(y2)
}
Now I call the function passing y2 via ... but I cannot access or
use the
object.
ftest(y2= 2, x= 1)
error in print(y2) : object "y2" not found
What I am doing wrong here? How can I access the object y2?
TIA and Merry Christmas,
Mark
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
