On Wed, 10 Mar 2010, Christophe Genolini wrote:
Hi the list
I define a S3 function that can have a various number of argument using '...'
When some arguments are missing, I would like to give them some default
value:
func.numeric <- function(x,...){
if(missing(y)){y<-3}
}
But it does not works...
I precise that I can not put 'y' explicitly in the argument list since func
is an S3 function, I cannot change its arguments.
Any suggestions?
If the generic func() has arguments "x" and "...", then you can easily
define a method func.numeric(x, y, ...). Methods need to implement all
arguments of a generic (including ...) but may add additional argument.
hth,
Z
Thanks
Christophe
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