Can I use MATLAB to do a Hilbert Transform on a 3-D array in MATLAB?

I want to perform a Hilbert transform of 3-D array A of size M*N*L. When I use the MATLAB function

hilbert(A);

it gives me following errors:

 ??? Error using ==> .*

 Number of array dimensions must match for binary array op.

 Error in ==> X:\MATLAB6p5\toolbox\signal\signal\hilbert.m

 On line 58  ==> x = ifft(x.*h(:,ones(1,size(x,2))));

I would like to know if there is any limitation on the HILBERT() function, and if there is any function I can use to calculate the Hilbert transform of a 3-D array.

Answer 1

[MathWorks Support Team]

The HILBERT function expects its input argument to be at most 2-D. When you enter a 3-D argument, the function returns the error listed above.

If you need to work with the HILBERT function and a 3-D matrix, please break the 3-D matrix up into 2-D layers and run the HILBERT algorithm in a loop to cover the entire matrix.