Sort all columns of matrix x with respect to the j-th column.

Description

This function simply uses sort.list function in R. The reason for using it is that one wants the sort to carry along all columns.

Usage

1

Arguments

x

An input matrix with several columns

j

The column number with reference to which one wants to sort

Value

A sorted matrix

Examples

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set.seed(30)
x=matrix(sample(1:50),ncol=5)
y=sort_matrix(x,3);y

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