library(plyr) M.1[,1:2]<-do.call(rbind,alply(replicate(3,M.2),3,function(x) x)) #or
M.1[,1:2]<-matrix(aperm(replicate(3,M.2),c(1,3,2)),ncol=2) A.K. ----- Original Message ----- From: Thiem Alrik <th...@sipo.gess.ethz.ch> To: "mailman, r-help" <r-help@r-project.org> Cc: Sent: Sunday, July 14, 2013 9:48 AM Subject: [R] Matrix column flip when recycled Dear list, I have a matrix M.1 (30x2) into which I would like to paste another matrix M.2 (10x2) three times. However, the columns get flipped in every odd-numbered recycle run. How can I avoid this behavior? M.1 <- matrix(numeric(30*2), ncol = 2) M.2 <- t(combn(1:5, 2)) M.1[, 1:2] <- M.2 Many thanks for help, Alrik ______________________________________________ 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.
