Hi,
I want to make the following array of numbers: -3 -3 -3 -3 -3 -3 -3 -2 -2 -2 -2 -2 -2 -2 ... 3 3 3 3 3 3 3 -3 -2 -1 0 1 2 3 -3 -2 -1 0 1 2 3 ... -3 -2 -1 0 1 2 3 (3 would be N, a painful example to type number). Here is my dirty attempt to do it, > N<-3 > > x<-c(-N:N) > > rj<-rbind(matrix(outer(matrix(1,1,2*N+1),x),nrow=1),rep(x,2*N+1)) > It sort of works, but I'd like some advice on how to do it properly as I'm very new to R and N may be big at some point. Thanks, baptiste ______________________________________________ R-help@stat.math.ethz.ch 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.
