what does this line of code mean?

Real_Part_of_Z_Comp_0s(:,30,:);

Answer 1

[Azzi Abdelmalek]

Read the documentation http://www.mathworks.com/help/matlab/matrices-and-arrays.html

If you have 3d array

a(:,:,1)=[1 2;3 4]
a(:,:,2)=[5 6;7 8]

you can access any part of your matrix, for example

a(:,1,:)