Arrays

Arrays

An R array generalizes a matrix to more than two dimensions, storing data in a multi-dimensional grid with array(data, dim = c(...)). Elements are accessed by specifying an index for each dimension, like a[1, 2, 3]. Arrays are less commonly used than matrices or data frames but are useful for genuinely multi-dimensional data.

Note: A 2-dimensional array is functionally the same as a matrix -- matrix() is just a convenient special case.

Example: Arrays

arr <- array(1:24, dim = c(2, 3, 4))

cat("Dimensions:", dim(arr), "\n")
cat("Element at [1,2,3]:", arr[1, 2, 3], "\n")