MATLAB: Diagonal displacement of matrix into another matrix

matrix

Hi,
I have this matrix 2X8:
and from this I need to create 4 matrices of zeros 5X5 where I displace the 2X8 matrix thi way:
Note that I have to do this parametrically so that if for exaple I have a matrix 2X10 it needs to be dsiplaced in 5 matrices 6X6 and so on.
Any suggestions?

Best Answer

Call your matrix A,
A=reshape(1:16,2,[]), %example input
A = 2×8
     1     3     5     7     9    11    13    15
     2     4     6     8    10    12    14    16

●
N=size(A,2)/2;
outputMatrices=cell(1,N);
z0=num2cell(zeros(1,N));
for i=1:N
  
    z=z0; z{i}=A(:,2*i-1:2*i);
    
    outputMatrices{i}=blkdiag(z{:});
    
end
outputMatrices{:} %the resulting matrices
ans = 5×5
     1     3     0     0     0
     2     4     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0

●
ans = 5×5
     0     0     0     0     0
     0     5     7     0     0
     0     6     8     0     0
     0     0     0     0     0
     0     0     0     0     0

ans = 5×5
     0     0     0     0     0
     0     0     0     0     0
     0     0     9    11     0
     0     0    10    12     0
     0     0     0     0     0

ans = 5×5
     0     0     0     0     0
     0     0     0     0     0
     0     0     0     0     0
     0     0     0    13    15
     0     0     0    14    16
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