On Sun, Nov 28, 2010 at 7:58 PM, Peter Ehlers <ehl...@ucalgary.ca> wrote: > Then, since this is R, here's the next step: > > v <- sample(50, 100, replace = TRUE) > result <- diff(v) / v[-length(v)]
Very nice! It did not even occur to me to use diff() in this case, though that is exactly what is needed and I've used it a hundred times in other situations (I hope I'm like wine and get better with age or....) Josh > > Peter Ehlers > ______________________________________________ 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.