base (version 3.3)

slice.index: Slice Indexes in an Array

Description

Returns a matrix of integers indicating the number of their slice in a given array.

Usage

slice.index(x, MARGIN)

Arguments

x

an array. If x has no dimension attribute, it is considered a one-dimensional array.

MARGIN

an integer giving the dimension number to slice by.

Value

An integer array y with dimensions corresponding to those of x such that all elements of slice number i with respect to dimension MARGIN have value i.

See Also

row and col for determining row and column indexes; in fact, these are special cases of slice.index corresponding to MARGIN equal to 1 and 2, respectively when x is a matrix.

Examples

x <- array(1 : 24, c(2, 3, 4))
slice.index(x, 2)