CenterArray

CenterArray[a, n] creates a list of length n with the elements of a at the center and zeros elsewhere.

CenterArray[a, {n1, n2, ...}] creates an n1×n2×... array with the array a at the center and zeros elsewhere.

CenterArray[a, nspec, pad] uses pad instead of zero for the background.

CenterArray[nspec] creates an array with a single 1 at the center and zeros elsewhere.

Examples

Center a list in a larger array:

CenterArray[{1, 2, 3}, 7]
(* {0, 0, 1, 2, 3, 0, 0} *)

Please visit the official Wolfram Language Reference for more details.