If your matrix is called mat, how about mat[which(mat[,2] > 0), ]
mat[which(mat[,2] < 0), ] -Ian mentor_ wrote: > > Hi, > > I have a matrix with negative and positiv values. > How can I get either the negative or positive values from the matrix? > > Matrix: > [,1] [,2] > [1,] 1 -3 > [2,] 2 -2 > [3,] 3 5 > [4,] 4 -2 > [5,] 5 9 > [6,] 6 8 > [7,] 7 -2 > > What I want to have is: > > [,1] [,2] > [1,] 1 -3 > [2,] 2 -2 > [3,] 4 -2 > [4,] 7 -2 > > and: > > [,1] [,2] > [1,] 3 5 > [2,] 5 9 > [3,] 6 8 > > > Regards > -- View this message in context: http://www.nabble.com/Return-values-%3C-0-from-Matrix-tp21913440p21914262.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
