[R] formals or args question

Ales Ziberna ales.ziberna at guest.arnes.si
Mon May 23 16:55:23 CEST 2005


You need the names of the elements of the list formals produces, not their 

Ales Ziberna

----- Original Message ----- 
From: "BJ" <erithid at bellsouth.net>
To: <r-help at stat.math.ethz.ch>
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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