> x <- 1:5 > diag(x)[rev(seq(length(x))),]
On Tue, Jan 11, 2011 at 12:56 PM, Ron Michael <ron_michae...@yahoo.com>wrote: > Hi, is there any direct R function to write an diagonal matrix in an > opposite way? for example I want to get like: > > > diag(rnorm(5))[,5:1] > [,1] [,2] [,3] [,4] [,5] > [1,] 0.0000000 0.0000000 0.0000000 0.000000 -0.1504687 > [2,] 0.0000000 0.0000000 0.0000000 -2.139669 0.0000000 > [3,] 0.0000000 0.0000000 -0.2102133 0.000000 0.0000000 > [4,] 0.0000000 -0.2609686 0.0000000 0.000000 0.0000000 > [5,] -0.6818889 0.0000000 0.0000000 0.000000 0.0000000 > > Is there any typical name for this type of matrix? > > Thanks, > > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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]] ______________________________________________ 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.
