R help - Mar 2010 - modifying the dots argument - how?

Is there a way to modify the dots-argument?
Let's consider I have a function that passes on its ... arguments to  
another function.
For some reason I know, that some elements in ... will cause problems.
Can I modify the ... structure somehow, e.g. delete elements?

foo <- function(...){
	innerFoo <- function(...){
		
	}

	AT THIS POINT I WANT TO MODIFY THE CONTENT OF ... BEFORE IT IS PASSED  
ON

	innerFoo(...)
}

Thanks,
Mark

???????????????????????????????????????
Mark Heckmann
Dipl. Wirt.-Ing. cand. Psych.
Vorstra?e 93 B01
28359 Bremen
Blog: www.markheckmann.de
R-Blog: http://ryouready.wordpress.com

Mark,

dots <- list (...) gives you a list with the dots arguments

if innerFoo expects not a list but "normal" arguments, do.call is your
friend:
do.call (innerFoo, dots)

HTH & sch?nen Tag,

Claudia


Mark Heckmann wrote:
> Is there a way to modify the dots-argument?
> Let's consider I have a function that passes on its ... arguments to 
> another function.
> For some reason I know, that some elements in ... will cause problems.
> Can I modify the ... structure somehow, e.g. delete elements?
> 
> foo <- function(...){
>     innerFoo <- function(...){
>        
>     }
> 
>     AT THIS POINT I WANT TO MODIFY THE CONTENT OF ... BEFORE IT IS 
> PASSED ON
> 
>     innerFoo(...)
> }
> 
> Thanks,
> Mark
> 
> ???????????????????????????????????????
> Mark Heckmann
> Dipl. Wirt.-Ing. cand. Psych.
> Vorstra?e 93 B01
> 28359 Bremen
> Blog: www.markheckmann.de
> R-Blog: http://ryouready.wordpress.com
> 

-- 
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Universit? degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste

phone: +39 0 40 5 58-37 68
email: cbeleites at units.it