FOR Loop not giving correct answer

Hi all,

I'd like to calculate the sum of C_ortho based on two different conditions, so I introduced 2 different for loops however, the result obtained are the same ,

In other terms, I'd like to add C(:,:,1,1)+C(:,:,2,1)... and C(:,:,1,2)+C(:,:,2,2).......

I attached my code below

clearvars
clc; 

C(:,:,1,1)=[1.3621 0.0391 0.0391 0 0 0;
            0.0391 .0925  0.0373 0 0 0;
            .0391 .0373  .00925  0 0 0;
              0      0     0     .0276 0 0;
              0      0     0       0   .0431 0;
              0      0     0       0    0    .0431];
          
C(:,:,2,1)=[.0925 .0391 0.0373 0 0 0;
            0.0391 1.3621  0.0391 0 0 0;
            .0373 .0391  .0925  0 0 0;
              0      0     0     .0431 0 0;
              0      0     0       0   .0276 0;
              0      0     0       0    0    .0431];
          
C(:,:,1,2)=[1.3386 .0023 0 0 0 0;
            0.0023 .00012  0 0 0 0;
               0     0   .00012  0 0 0;
              0      0     0     7 0 0;
              0      0     0       0   5 0;
              0      0     0       0    0    5];
          
          
C(:,:,2,2)=[10 .45 0 0 0 0;
            .45 .00012  0 0 0 0;
               0     0   .00012  0 0 0;
              0      0     0     8 0 0;
              0      0     0       0   6.1 0;
              0      0     0       0    0    5];
          
          
C_ortho                               =   zeros(6,6,2);

for i=1:2
    for j=1:2
                 C_ortho              =   C_ortho+1.5*C(:,:,i,j);
    end 
end 
 

Answer 1

[David Hill]

C(:,:,1,1)+C(:,:,1,2);
C(:,:,2,1)+C(:,:,2,2);

[Mark Sc]

@David Hill

Thanks David for your comment, however, I need to do it in a loop as it's a part of large code, and sometimes, i, j indices changes...

[David Hill]

for i=1:2
    for j=1:2
                 C_ortho(:,:,i)             =   C_ortho(:,:,i)+1.5*C(:,:,i,j);
    end 
end