有什么方法可以在R中独立地对矩阵的列进行排序吗? [英] Is there any way to sort columns of a matrix independently in R?

问题描述

我是R中的新手，因此，我确实需要一些帮助.我只想对每一列进行独立排序.感谢您的帮助！

I'm a newbie in R so, I really need some help here. I just want to sort each column independently. Any help is appreciated!

 > mat <- matrix(c(45,34,1,3,4325,23,1,2,5,7,3,4,32,734,2),ncol=3)
 > mat
      [,1] [,2] [,3]
 [1,]   45   23    3
 [2,]   34    1    4
 [3,]    1    2   32
 [4,]    3    5  734
 [5,] 4325    7    2

到

      [,1] [,2] [,3]
 [1,]    1    1    2
 [2,]    3    2    3
 [3,]   34    5    4
 [4,]   45    7   32
 [5,] 4325    23 734

推荐答案

是的，有！

apply(mat, 2, sort)
     [,1] [,2] [,3]
[1,]    1    1    2
[2,]    3    2    3
[3,]   34    5    4
[4,]   45    7   32
[5,] 4325   23  734

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