Dear R family I am attempting to create a matrix. e.g., 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 How could I write a R program? Later I want to extend it to a N by N case. Thanks in advance best Moohwan
Try this: N <- 5 diag(1, N)[c(N, 1:(N - 1)),] On Fri, Dec 11, 2009 at 1:47 PM, Moohwan Kim <kmhlmj2 at gmail.com> wrote:> Dear R family > > ?I am attempting to create a matrix. e.g., > ?0 0 0 0 1 > ?1 0 0 0 0 > ?0 1 0 0 0 > ?0 0 1 0 0 > ?0 0 0 1 0 > ?How could I write a R program? > ?Later I want to extend it to a N by N case. > ?Thanks in advance > > ?best > ?Moohwan > > ______________________________________________ > R-help at 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. >-- Henrique Dallazuanna Curitiba-Paran?-Brasil 25? 25' 40" S 49? 16' 22" O
Hi Him. Did you read the Help/Manual in PDF/A Instroduction to R.PDF? MyVect<-scan() 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 MyVect MyMat<-matrix(MyVect, ncol=5, byrow=T) MyMat bests milton On Fri, Dec 11, 2009 at 10:47 AM, Moohwan Kim <kmhlmj2@gmail.com> wrote:> Dear R family > > I am attempting to create a matrix. e.g., > 0 0 0 0 1 > 1 0 0 0 0 > 0 1 0 0 0 > 0 0 1 0 0 > 0 0 0 1 0 > How could I write a R program? > Later I want to extend it to a N by N case. > Thanks in advance > > best > Moohwan > > ______________________________________________ > 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<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. >[[alternative HTML version deleted]]
Hi try R> library(magic) R> ashift(diag(5),1) HTH rksh enrique Dallazuanna wrote:> Try this: > > N <- 5 > diag(1, N)[c(N, 1:(N - 1)),] > > On Fri, Dec 11, 2009 at 1:47 PM, Moohwan Kim <kmhlmj2 at gmail.com> wrote: > >> Dear R family >> >> I am attempting to create a matrix. e.g., >> 0 0 0 0 1 >> 1 0 0 0 0 >> 0 1 0 0 0 >> 0 0 1 0 0 >> 0 0 0 1 0 >> How could I write a R program? >> Later I want to extend it to a N by N case. >> Thanks in advance >> >> best >> Moohwan >> >> ______________________________________________ >> R-help at 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. >> >> > > > >-- Robin K. S. Hankin Uncertainty Analyst University of Cambridge 19 Silver Street Cambridge CB3 9EP 01223-764877