These are contradictory requirements: either you have n random numbers from the interval [0,1), then you can't guarantee anything about their sum except that it will be in [0,n). Or you constrain the sum, then your random numbers cannot be random in [0,1). You could possibly scale the random numbers: n <- 13 x <- runif(n) x <- x / sum(x) x; sum(x)
This will guarantee that their sum is 1 (to numerical accuracy), but your numbers are then effectively drawn from the interval [0,2/n) for large n. B. On Nov 22, 2014, at 9:29 AM, Ragia Ibrahim <ragi...@hotmail.com> wrote: > > Dear all, > I use R 3.1.1 for Windows. > kindly how can I generate n number of random numbers with probability from > [0,1] > and their sum must not be more than one > thanks in advance > Ragia > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
