## 1. ## This could be captured into a function tmp <- matrix(0, 7, 4) tmp diag(tmp) <- 1 diag(tmp[-1,]) <- 2 diag(tmp[-(1:2),]) <- 3 diag(tmp[-(1:3),]) <- 4 tmp
## 2. v <- 1:4 v2 <- c(v, rep(0, length(v))) ## this generates a warning that can safely be ignored (or turned off) matrix(v2, length(v2)-1, length(v)) On Mon, Mar 6, 2017 at 11:18 AM, Peter Thuresson <peter.thures...@umea.se> wrote: > Hello, > > Is there a function in R which can transform, let say a vector: > > c(1:4) > > to a matrix where the vector is repeated but "projected" +1 one step down for > every (new) column. > I want the output below from the vector above, like this: > > p<-c(1,2,3,4,0,0,0,0,1,2,3,4,0,0,0,0,1,2,3,4,0,0,0,0,1,2,3,4) > > matrix(p,7,4) > > best regards / Peter > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
