Repeat columns or rows

Repeat matrix object respectively to its shape and orientation

crep(x, times)

rrep(x, times)

Arguments

x	matrix
times	number of repetitions

Value

matrix

Details

crep = columnwise repetition

rrep = rowwise repetition

Examples

# Columnwise repetition
crep(v(1:3), 4)
#>      [,1] [,2] [,3] [,4]
#> [1,]    1    1    1    1
#> [2,]    2    2    2    2
#> [3,]    3    3    3    3
crep(t(v(1:5)), 4)
#>      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14]
#> [1,]    1    2    3    4    5    1    2    3    4     5     1     2     3     4
#>      [,15] [,16] [,17] [,18] [,19] [,20]
#> [1,]     5     1     2     3     4     5
# Rowwise repetition
rrep(v(1:3), 4)
#>       [,1]
#>  [1,]    1
#>  [2,]    2
#>  [3,]    3
#>  [4,]    1
#>  [5,]    2
#>  [6,]    3
#>  [7,]    1
#>  [8,]    2
#>  [9,]    3
#> [10,]    1
#> [11,]    2
#> [12,]    3
rrep(t(v(1:5)), 4)
#>      [,1] [,2] [,3] [,4] [,5]
#> [1,]    1    2    3    4    5
#> [2,]    1    2    3    4    5
#> [3,]    1    2    3    4    5
#> [4,]    1    2    3    4    5