ArrayDepth[expr] gives the depth to which expr is a full array, with all the parts at a particular level being lists of the same length, or is a SparseArray object.
ArrayDepth[list] is equivalent to Length[Dimensions[list]].
Examples: ArrayDepth[a,b] ; ArrayDepth[a,b] .
See Section 2.4.3 and Section 3.7.11.
See also: Dimensions, Depth, ArrayQ, VectorQ, MatrixQ, PadLeft.
New in Version 5.0.