Reverse elements along axes

rray_reverse() reverses the order of the elements of x along one or more axes.

Usage

rray_reverse(x, ..., axes)

Arguments

x

An array.

...

These dots are for future extensions and must be empty.

axes

An integer vector of axes to reverse along.

Value

An array with the same type and dimensions as x.

Details

Names on a reversed axis move with the data. Every other axis keeps its names untouched.

Examples

rray_reverse(1:5, axes = 1)
#> [1] 5 4 3 2 1

x <- matrix(1:6, nrow = 2, dimnames = list(c("r1", "r2"), c("a", "b", "c")))

# Reverse the rows, names move with the data
rray_reverse(x, axes = 1)
#>    a b c
#> r2 2 4 6
#> r1 1 3 5

# Reverse the columns
rray_reverse(x, axes = 2)
#>    c b a
#> r1 5 3 1
#> r2 6 4 2

# Reverse both axes
rray_reverse(x, axes = c(1, 2))
#>    c b a
#> r2 6 4 2
#> r1 5 3 1