How to calculate the norm of a multi-dimensional matrix?

Hi

I'm trying to find the norm of a multi-dimensional (4D) matrix. I've tried norm(X) but I get the error

Error using norm
Input must be 2-D.

Anyone know if there's a function for calculating the norm of a multi-dimensional matrix?

[Torsten]

X = X(:);
norm(X)

[Michael]

@Torsten Thanks

[jon erickson]

This works great for versions prior to 2022a. It appears N-d arrays are now supported with the norm(X, 'fro') option.

[Jan]

Norms are defined for vectors and matrices. Before you can implement a norm for a 4D array, you have to define mathematically, what you wnt to calculate.