How to create a random 3D matrix?

Question

Is there any way of creating a 3D matrix randomly? There are ways to create random 2D matrices using randint function. Is there any inbuilt function like that?

E.g.

Answer 1

You can use randi(imax, size1, size2, size3) function where imax refers to maximum of random integer values (mean upper bound) and 1 is lower bound. You can expand size argument to sizeN what you want.

This is an example of its usage:

>> A = randi(5, 4, 4, 3)

A(:,:,1) =

     4     4     5     4
     4     1     2     2
     2     1     3     3
     4     3     2     4


A(:,:,2) =

     5     1     5     1
     5     2     2     2
     3     5     5     4
     1     2     2     3


A(:,:,3) =

     2     5     2     3
     5     2     3     4
     3     4     1     5
     3     4     1     1