I'm studying R in my free time. I want to build a vector where each element is equal to the element before it in the sequence plus some random tweak.
In python, I would write: vec = [100] * 50 # make a 50-element list with each element set to 100 from random import randint for i, v in enumerate(vec): if i is not 0: # if we're not on the first element vec[i] = vec[i-1] + randint(-2, 2) I suspect R has some fancier way of doing this. How to? TIA -- A better way of running series of SAS programs: http://overlook.homelinux.net/wilsonwiki/SasAndMakefiles ______________________________________________ R-help@stat.math.ethz.ch 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.