When the first input is a matrix, the second input must be 1, 2, inf, or \''fro\''. When the first input is a vector, the second input must be a positive real-valued scalar, inf, -inf, or \''fro\''. SVD calculation of the 2-NORM did not converge at index = {0,number,integer}. Sparse norm(S,2) is not available. First argument must be single or double. The only norm available for N-D arrays is \''fro\''.