Re: [R] check if a certain ... argument has been passed on to my user-defined function

and take a look at ?hasArg hth, Matthias Charles C. Berry wrote: See ?match.call and note the expand.dots arg. HTH, Chuck On Thu, 11 Dec 2008, Mark Heckmann wrote: Hi, How can I check if a certain ... argument has been passed on to my user-defined function or not? foo <- functio

Re: [R] check if a certain ... argument has been passed on to my user-defined function

See ?match.call and note the expand.dots arg. HTH, Chuck On Thu, 11 Dec 2008, Mark Heckmann wrote: Hi, How can I check if a certain ... argument has been passed on to my user-defined function or not? foo <- function(data, ...) { ### here I want to check whether xlab was passed

Re: [R] check if a certain ... argument has been passed on to my user-defined function

Try this: foo <- function(data, ...) { ### here I want to check whether xlab was passed with the ... arguments ### or if the ... arguments did not contain an xlab argument args <- list(...) return(ifelse("xlab" %in% names(args), "Exists", "Missing")) } On Thu, Dec 11, 2008 at 4:22 PM, Mark Heckma

[R] check if a certain ... argument has been passed on to my user-defined function

Hi, How can I check if a certain ... argument has been passed on to my user-defined function or not? foo <- function(data, ...) { ### here I want to check whether xlab was passed with the ... arguments ### or if the ... arguments did not contain an xlab argument } I tried missing(xlab) , exist