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All permutations of the columns of a matrix

permn_cols.Rd

All permutations of the columns of a matrix

Usage

permn_cols(m)

Arguments

m

a matrix

Details

This function is a wrapper for permn from package `combinat'.

Value

a list with one element for each permutation of the columns. Each element of the list is an unnamed list with two components:

  1. the permutation, a vector of positive integers,

  2. a matrix obtained by permuting the columns of m.

Author

Georgi N. Boshnakov

Examples

m <- matrix(c(11:14,21:24,31:34), ncol=3)
pm <- permn_cols(m)
pm[[2]]
#> [[1]]
#> [1] 1 3 2
#> 
#> [[2]]
#>      [,1] [,2] [,3]
#> [1,]   11   31   21
#> [2,]   12   32   22
#> [3,]   13   33   23
#> [4,]   14   34   24
#>