indexArray: Select along one dimension in multidimensional array

In bentyeh/r_bentyeh: Personal Scripts

Description

Select along one dimension in multidimensional array

Usage

indexArray(x, dim, value, drop = TRUE, verbose = FALSE)

Arguments

x	array.
dim	integer. Dimension along which to select one hyperplane.
value	integer. Hyperplane to select from given dimension.
drop	logical. For matrices and arrays. If TRUE the result is coerced to the lowest possible dimension.
verbose	logical. Print out equivalent command using '[' operator.

Value

array or vector.

References

https://stackoverflow.com/a/14502298.

Examples

A <- array(data = 1:24, dim = c(2, 3, 4), dimnames = list(c("x1", "x2"), c("y1", "y2", "y3"), NULL))
identical(indexArray(A, 1, 1), A[1, , ])
identical(indexArray(A, 1, 1, drop = FALSE), A[1, , , drop = FALSE])
identical(indexArray(A, 1, 2), A[2, , ])
identical(indexArray(A, 2, 3), A[, 3, ])

bentyeh/r_bentyeh documentation built on Jan. 1, 2021, 4:59 p.m.