Extract the last n elements of a vector

Extract the last n elements of a vector

Usage

lastn(x, n)

Arguments

x

a vector

n

number of elements to keep, an integer

Details

I did not know about the function tail() when I did this one, but the two functions are not completely equivalent (and tail is generic).

If n is equal to length(x), x is returned as is. If n is equal to zero or is negative, a length zero vector is returned.

It is an error for n to be larger than length(x).

Value

a vector containing the last n elements of x, see Details

See also

See Also as tail

Examples

lastn(1:10, 3) # 8:10
#> [1]  8  9 10
lastn(letters, 5) # "v" "w" "x" "y" "z"
#> [1] "v" "w" "x" "y" "z"