ab[order(ab[,1]),]
------------------------- cuncta stricte discussurus ------------------------- -----Ursprüngliche Nachricht----- Von: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Im Auftrag von FMH Gesendet: Tuesday, September 22, 2009 1:20 PM An: r-help@r-project.org Betreff: [R] How to sort the elements in a matrix? Dear All, Let ab is the combination of matrices a and b. a <- matrix(c(1,2,3,4), nrow = 2, ncol = 2) b <- matrix(c(4,3,1,2), nrow = 2, ncol = 2) ab <- rbind(a, b) >From matrix ab, could someone give some advice on the way to sort all elements in column 2, by the sequence of the elements in column 1 in ascending order? Thank you. Fir ______________________________________________ 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.
