How to create a 4 dimensional array??

This is just a general question because I can't find it anywhere, but does anyone know how to create a 4-D array? What would the basic code be for it or just a basic example of one would be great!

Answer 1

[Walter Roberson]

Supposing A and B are 3 dimensional arrays, then cat(4,A,B) would join them along the fourth dimension.

[Jan]

This works for 2D arrays also, because they are just special 3D arrays. See: "cat(4, 1, 1)".

Answer 2

[the cyclist]

Here is a trivial example:

 >> A = zeros(2,3,5,7);
 >> A(1,2,1,2) = 6;
 >> A(1,1,5,6) = 5;
 >> A(2,1,1,:) = pi;

[Jan]

This is, as requested, the basic code. +1

[erfan vahdat]

thanks

[Precious Chukwuezi]

thanks