Muhammad Azam: > I am one of the new R user. I have a problem regarding to know which of > the integer in each column of the following matrix is in majority. I want > to know that integer e.g. in the first column 1 is in majority. > >> x=matrix(c(1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,1,2,3,3),ncol=4) >> x > [,1] [,2] [,3] [,4] > [1,] 1 2 3 4 > [2,] 1 2 4 1 > [3,] 1 3 4 2 > [4,] 2 3 4 3 > [5,] 2 3 4 3
As long as the matrix only contains integers, the following should work: apply(x, 2, function(z) which.max(tabulate(z)) ) Output: 1 3 4 3 -- Karl Ove Hufthammer ______________________________________________ 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.
