Hi Greg, I replied because I thought the name of the "expand.grid" function can be puzzling. While "expand.grid" is a very elegant and useful function, it is much easier to see what is happening with explicit loops rather than loops buried deep inside "expand.grid". Also note Bill's comment about producing repeats by converting numeric values to character without the leading zeros. You can also use "formatC" to deal with that problem.
Jim On Tue, Aug 20, 2019 at 12:05 AM <g.eastham.gilb...@gmail.com> wrote: > > Jim, > > Thank you very much for your help. I have "unpacked" the code and have a > rudimentary understanding of what you did. Thanks again. However, I have no > idea to what Bert is referring. Could you help me understand his suggestion? > Thanks. > > -Greg ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.