[R] sorting

[threshold]

Hi, I want to sort my matrix according to (any) selected column. For example
given matrix:
> x
     [,1] [,2] [,3]
[1,]    3    4    7
[2,]    2    5    8
[3,]    1    6    9

I want to sort the first column in ascending order and make the other
columns follow the 'new order' like:

> x1
     [,1] [,2] [,3]
[1,]    1    6    9
[2,]    2    5    8
[3,]    3    4    7

thank in advance for help.

best




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