?missing On 7/2/06, Jonathan Greenberg <[EMAIL PROTECTED]> wrote: > > I'm a bit new to writing R functions and I was wondering what the "best > practice" for having optional variables in a function is, and how to test > for optional and non-optional variables? e.g. if I have the following > function: > > helpme <- function(a,b,c) { > > > } > > In this example, I want c to be an optional variable, but a and b to be > required. How do I: > 1) test to see if the user has inputted c > 2) break out of the function of the user has NOT inputted a or b. > > Thanks! > > --j > > -- > > Jonathan A. Greenberg, PhD > NRC Research Associate > NASA Ames Research Center > MS 242-4 > Moffett Field, CA 94035-1000 > Phone: 415-794-5043 > AIM: jgrn3007 > MSN: [EMAIL PROTECTED] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html >
-- Jim Holtman Cincinnati, OH +1 513 646 9390 (Cell) +1 513 247 0281 (Home) What is the problem you are trying to solve? [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html