The Distance command computes the distance between two matrices or two vectors with respect to a specified p-norm.

If A and B are both matrices then p must be one of 1, 2, infinity, Frobenius, or Euclidean.

If A and B are both vectors then p must be one of a non-negative number, infinity, -infinity, Frobenius, or Euclidean.

A and B must both be either vectors or matrices, not one of each.