On Thu, Nov 25, 2010 at 3:44 PM, henrique <henri...@allianceasset.com.br> wrote: > I have a vector of values -1, 0, 1, say > > a <- c(0, 1, 0, 1, 1, -1, -1, -1, 0, -1, -1) > > I want to create a vector of the cumulative sum of this, but I need to set a > maximum and minimum value for the cumsum, for example: > > max_value <- 2 > min_value <- -2 > the expected result would be (0, 1, 1, 2, 2, 1, 0, -1, -1, -2, -2) >
Try this: f <- function(x, y) max(min(x + y, max_value), min_value) Reduce(f, a, 0, accumulate = TRUE)[-1] -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ 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.
