On Tue, Apr 8, 2008 at 1:50 PM, Hans-Jörg Bibiko <[EMAIL PROTECTED]> wrote: > Dear all, > > I have -hopefully- a tiny problem. > > I was sent a text file containing a distance matrix à la: > > 1 > 2 3 > 4 5 6 >
Try this! I put your test data in "text.txt" and voila: mat <- matrix(0, 3,3) mat[row(mat) >= col(mat)] <- scan("test.txt") I found this Idea after "RSiteSearch("scan triangular") led to this item as the very first link: http://finzi.psych.upenn.edu/R/Rhelp02a/archive/22369.html PJ -- Paul E. Johnson Professor, Political Science 1541 Lilac Lane, Room 504 University of Kansas ______________________________________________ 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.