Try this: a[order(a[,1], a[,2]),]
On Thu, Oct 8, 2009 at 1:50 PM, Kajan Saied <kajan.sa...@gmail.com> wrote: > Dear R-Help Team, > > I have been trying to sort (all columns of) a matrix: > >> a<-matrix(a<-c(1,3,4,6,6,4,6,56,4,64,86,39,4,2),length(a),2) >> a > [,1] [,2] > [1,] 1 1 > [2,] 3 3 > [3,] 4 4 > [4,] 6 6 > [5,] 6 6 > [6,] 4 4 > [7,] 6 6 > [8,] 56 56 > [9,] 4 4 > [10,] 64 64 > [11,] 86 86 > [12,] 39 39 > [13,] 4 4 > [14,] 2 2 >> > I would like to have the matrix sorted and the output should again be *a > matrix* with nrow=length(a) and ncol=2 just like (a) but only > sorted. Whatever I try (be it sort(), order()...) I receive a vector of > length(a)*2... > > Could you please help me? > > Best regards, > > kajan > > [[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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.
