Hello and sorry that I still haven´t found a solution for my problem. I need to extract the lower and upper triangle from a square matrix including the diagonal. This diagonal is not zero in that special case. I tried with as.dist
w<-as.dist(w, diag = TRUE) > w 1 2 3 4 5 1 0 2 2 0 3 3 8 0 4 4 9 14 0 5 5 10 15 20 0 but found no way to keep the diagonal that is in the matrix. I also tried this but as I expected it makes no difference: w<-matrix(1:25, ncol=5, nrow=5) > upperTriangle(w)<-NA > w [,1] [,2] [,3] [,4] [,5] [1,] 1 NA NA NA NA [2,] 2 7 NA NA NA [3,] 3 8 13 NA NA [4,] 4 9 14 19 NA [5,] 5 10 15 20 25 > w<-as.dist(w, diag = TRUE) > w 1 2 3 4 5 1 0 2 2 0 3 3 8 0 4 4 9 14 0 5 5 10 15 20 0 Is there perhaps a possibility to give the diagonal as a vector within as.dist? I would be glad if somebody could help me. Greetings Birgit Birgit Lemcke Institut für Systematische Botanik Zollikerstrasse 107 CH-8008 Zürich Switzerland Ph: +41 (0)44 634 8351 [EMAIL PROTECTED] ______________________________________________ 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.