Hi all, i have the following.. a <- data.frame(data = seq(1,10))
i have indices: x <- c(1, 5, 3, 9) y <- c(2, 7, 4, 10) I want the cumsum of a[1:2], a[5:7], a[3:4]... is there an elegant way to do it without any loop? Thanks! -- View this message in context: http://www.nabble.com/cumsum-list..-tp16025202p16025202.html Sent from the R help mailing list archive at Nabble.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.
