Sort Rows of a Matrix (Matlab Style)

Sort rows of a matrix according to values in a column.

sortrows(A, k = 1)

Arguments

A

numeric matrix.

k

number of column to sort the matrix accordingly.

Details

sortrows(A, k) sorts the rows of the matrix A such that column k is increasingly sorted.

Value

Returns the sorted matrix.

See also

sort

Examples

A <- magic(5)
sortrows(A)
#>      [,1] [,2] [,3] [,4] [,5]
#> [1,]    4    6   13   20   22
#> [2,]   10   12   19   21    3
#> [3,]   11   18   25    2    9
#> [4,]   17   24    1    8   15
#> [5,]   23    5    7   14   16
sortrows(A, k = 2)
#>      [,1] [,2] [,3] [,4] [,5]
#> [1,]   23    5    7   14   16
#> [2,]    4    6   13   20   22
#> [3,]   10   12   19   21    3
#> [4,]   11   18   25    2    9
#> [5,]   17   24    1    8   15