# Sum repetition in matrices

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Moe on 28 Apr 2014
Commented: Star Strider on 28 Apr 2014
Hi everyone,
Suppose I have matrix d1, d2, d3, d4, d5:
d1 = [0 0 0 1;0 0 0 0]; % input data
d2 = [0 0 0 0;1 0 0 0]; % input data
d3 = [0 1 0 0;0 0 0 0]; % input data
d4 = [0 0 0 0;1 0 0 0]; % input data
d5 = [0 0 0 0;0 0 1 0]; % input data
and matrix c:
c = [10 12 14 5;1 4 9 15];
Then I want matrix m to be:
m1=c+d1
m2=c+d1+d2 % In other words, in each iteration, the new matrix d should be summed with previous one (same for rest of calculation)
m3=c+d1+d2+d3
m4=c+d1+d2+d3+d4
m5=c+d1+d2+d3+d4+d5
Note: matrix d is generated with another loop automatically which is dependent to output of matrix m (sum(sum(m)).
##### 2 CommentsShowHide 1 older comment
Moe on 28 Apr 2014
@ Image Analyst
Actually, I have over than 10,000 of matrix "d", and each of them will be calculated after calculation each matrix "m" (sort of convergence problem).

Star Strider on 28 Apr 2014
This works:
d(:,:,1) = [0 0 0 1;0 0 0 0];
d(:,:,2) = [0 0 0 0;1 0 0 0];
d(:,:,3) = [0 1 0 0;0 0 0 0];
d(:,:,4) = [0 0 0 0;1 0 0 0];
d(:,:,5) = [0 0 0 0;0 0 1 0];
c = [10 12 14 5;1 4 9 15];
m(:,:,1) = c;
for k1 = 2:size(d,3)+1
m(:,:,k1) = m(:,:,k1-1) + d(:,:,k1-1);
end
m = m(:,:,2:end) % Result for ‘m’
##### 2 CommentsShowHide 1 older comment
Star Strider on 28 Apr 2014
My pleasure!