How to make diagonal matrices from a single column

I want to make multiple diagonal matrices from a single colimn.

A=[1;2;3;4;5;6;7;8]

From this...

I want to make...

B=[1 0; 0 2]; [3 0; 0 4]; [5 0;0 6]; [7 0;0 8]

Then,

Each diagonal matrix is to be vertically attached.

So, from 10*1 to 10*2.

How can I do that?

Thanks,

Answer 1

[the cyclist]

B = zeros(8,2);
B(1:2:end,1) = A(1:2:end);
B(2:2:end,2) = A(2:2:end);

[Ed Eun]

Thanks and there is one more thing. if the dataset is small, this is good. What if the set has a single column with 3816 observation? Everty 72 obs are supposed to be a diagonal matrix. So, there are 52 sets of 72*72 diagonal matrices.

Is there an efficient way to do that? or, let me know some reference docs.

Thanks again.

[the cyclist]

I think you got some of your math wrong there, but something like this should work:

A = 1:3744;

B = zeros(52,72);

for row = 1:numel(A)
    col = mod(ia-1,72) + 1;
    B(row,col) = A(row);
end