You need to define "sorted" in the context of a matrix. By each row individually, by each column individually, or by column using the whole matrix, or by row using the whole matrix?
> -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Kajan Saied > Sent: Thursday, October 08, 2009 11:51 AM > To: r-help@r-project.org > Subject: [R] sort (all columns of) a matrix > > 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. ______________________________________________ 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.
