Hi, May be this helps: set.seed(85) mat1 <- matrix(sample(seq(0,1,by=0.01),360000,replace=TRUE),ncol=3) mat2 <- mat1[sprintf("%.2f",rowSums(mat1))=="1.00",] any(!rowSums(mat2)) #[1] FALSE A.K.
Hi, I'd like to create a matrix with three columns so that each element is between 0 and 1 and each row always adds to 1. So, if in the same row the columns are x1, x2, and x3 and x1 =1, then x2 = 0 and x3 = 0. Or if x1 = .03, then x2 = .97 and x3 = 0. Or... x1 = .05, x2 = .01, x3 = .94. Basically so it accounts for all values of x1,x2,x3 that add up to 1 with the sequence by 0.01. I tried a nested seq (if that is even possible), but that didn't work. Is there a way to do this? Perhaps a package that I don't know about? ______________________________________________ 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.