[R] warning messages

Gabor Grothendieck ggrothendieck at gmail.com
Sun Jun 25 17:06:23 CEST 2006

Try this:

f <- function() {
	cat("c to continue, anything else to quit: ")
	x <- readline()
	if (x != "c") stop("User forced exit")
	# rest of function


On 6/25/06, Matthew Bridgman <m.bridgman at sbcglobal.net> wrote:
> I want to put warning messages into some of my functions to remind
> myself to change the output file names each time I run them. Is there a
> way to do this that will allow me to respond to the warning message
> (i.e. "continue function" or "cancel")?
> Thanks,
>   Matt
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