On 15-09-2013, at 04:36, gildororo...@mail-on.us wrote: > I came from Python, newly learning R. is there something like accumulate() in > R? >
Yes: cumsum Berend > Example: > accumulate([1,2,3,4,5]) --> 1 3 6 10 15 > > Or perhaps I should show the problem. The problem I am trying to solve, is to > select elements from X until it accumulate to 30. My solution is: > >> X = c(1,3,4,5,8,15,35,62,78,99) >> X[sapply(seq_len(length(X)), function(x) { sum(X[1:x])}) < 30] > [1] 1 3 4 5 8 > > Is this already the shortest/canonical way to do it in R? > > > ------------------------------------------------- > > VFEmail.net - http://www.vfemail.net > $14.95 ONETIME Lifetime accounts with Privacy Features! 15GB disk! No > bandwidth quotas! > Commercial and Bulk Mail Options! > > ______________________________________________ > 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. ______________________________________________ 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.