formals() returns a list, so you could try this:
a <- function(p, r) p + r
names(formals(a))
I hope it helps.
Best,
Dimitris
----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm
----- Original Message -----
From: "BJ" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, May 23, 2005 4:45 PM
Subject: [R] formals or args question
Hello again, thank you again for all of your help. I am trying to
get the arguments for a function, in a way that I can handle them.
If I do args(fun), it doesnt really do what I want. If I use
formals(fun) i get output like:
$a
$r
$s
Now, lthis is supposedly a list, but if i say formals(a)[[1]], I get
nothing. I am just trying to get a vector with teh arguments of a
function so I can loop over them.
ex; a<-function(p,r){p+r}
want: vector of c("p", "r")
The documentation for args and formals is quite confusing. Thanks
again! ~Erithid
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