Hey all, I need to store an array in every element of the array I have, how do i do this?

Example: For an array say x, I want every element in x to have an array. so x(1,1) will have an (m X n) matrix and so on.

Answer 1

[Mohammad Abouali]

Use cell array like this

X=cell(3,3);

X{1,1}=rand(3,2);
X{2,1}=rand(5,7);

and so on

[Aditya]

Thanks for the reply Mohammad, but my main array does not have a predefined size, it keeps incrementing.

[Walter Roberson]

X = {};
K = 0;
while rand() <= 0.93
   K = K + 1;
   n = randi(50);
   X{K} = rand(1,n);
end

There, a cell of indefinite length, with each cell member being of potentially different size. Adapt as needed.

[Mohammad Abouali]

Then don't predefine it. You can either give it a blank cell array as walter said in above post, or you can start with something like this:

x{1,1}=rand(3,2)
x = 
    [3x2 double]

x{3,5}=rand(4,6)
x = 
    [3x2 double]    []    []    []              []
              []    []    []    []              []
              []    []    []    []    [4x6 double]

x starts to expand and it grows. However, due to performance issue it is not recommended. But if that's what needed then that's what is needed.