Wendy wrote on 12/01/2011 04:27:09 AM: > Hi all, > > I have a vector, e.g., A = c(10, 20, 30, 40). This 4 numbers have 4! = 24 > different combination. I want to generate a matrix with one combination in > one row, so the output would be > > B = > 10 20 30 40 > 10 40 20 30 > ... > > Does anyone know how to do this easily in R? Thank you very much. > > Wendy
This has been asked and answered in earlier posts. Search R-Help for permutations. Here is one solution (see below). Jean http://tolstoy.newcastle.edu.au/R/e8/help/09/10/0983.html From: David Winsemius Date: Sat, 10 Oct 2009 require(combinat) permn(c(23,46,70,71,89)) [[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.
