On 9/11/2007 8:54 AM, kevinchang wrote: > I heard that if-loop may result in errors if we are going to loop for a lot > of times.
I don't know what you mean by an "if-loop", but if doing it lots of times caused an error, that would likely be a bug in R. And I know of no such bug. > And sum() can be the alternative way to do this kind of hugbe > looping. But I haven't figure out how . Can someone please give me an > concrete example of using sum() for this purpose? total <- sum(1:10) is a much faster way to evaluate total <- 0 for (i in 1:10) total <- total + i but neither one should cause an error (and neither one involves an "if-loop"). Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list 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.
