R: Repeatedly slice a vector

vec_chop {vctrs}

R Documentation

Repeatedly slice a vector

vec_chop() provides an efficient method to repeatedly slice a vector. It captures the pattern of map(indices, vec_slice, x = x).

vec_chop(x, indices = NULL)

`x`	A vector
`indices`	A list of index values to slice `x` with, or `NULL`. Each element of the list must be an integer, character or logical vector that would be valid as an index in `vec_slice()`. If `NULL`, `x` is split into its individual elements, equivalent to using an `indices` of `as.list(vec_seq_along(x))`.

A list of size vec_size(indices) or, if indices == NULL, vec_size(x).

vec_chop(1:5)
vec_chop(1:5, list(1, 1:2))
vec_chop(mtcars, list(1:3, 4:6))

[Package vctrs version 0.2.2 Index]