[R] How do I query "..." in a function call?

Mark Leeds
Tue, 22 Nov 2011 04:07:29 -0000

Hi: You can make a list out of the ... by doing below.

myfunction = function(...)
{
params <- list(...)
print(params)
print(str(params))
}

On Mon, Nov 21, 2011 at 5:18 PM, Jonathan Greenberg
<jgrn@illinois.edu>wrote:

> This is probably a very noobish question, but if I want to create a
> function that allows an undetermined number of, say, numeric vectors to be
> fed to it, I would use:
>
> myfunction = function(...)
> {
> # Do something
>
> }
>
> Right?  If so, how do I a) count the number of vectors "fed" to
the
> function, and b) how do I treat those vectors as variables, e.g. for the
> call:
>
> myfunction(c(1:10),c(2:11),c(3:13))
>
> Thanks!
>
> --j
>
> --
> Jonathan A. Greenberg, PhD
> Assistant Professor
> Department of Geography
> University of Illinois at Urbana-Champaign
> 607 South Mathews Avenue, MC 150
> Urbana, IL 61801
> Phone: 415-763-5476
> AIM: jgrn307, MSN: jgrn307@hotmail.com, Gchat: jgrn307, Skype: jgrn3007
> http://www.geog.illinois.edu/people/JonathanGreenberg.html
>
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