How can I sum a matrix in a For Loop?

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Edoardo 2012-11-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/52614-how-can-i-sum-a-matrix-in-a-for-loop

Hi;

I've this code:

for t=0:10 stream=[2 3 4 5 4 5 6 7]; U=stream(randi(length(stream))); y=[1 2 3 4; ... 2 3 4 5 ; ... 1 2 3 4; ... 1 2 3 4; ... 3 4 5 6]; z=U.*y; z=bsxfun(@plus,z,z) t=0:10; end

I would like have a Ztot = z(when t=1)+ z(when t=2)... z(when t=10). I want a single array made from the sums of all the matrices that arise at each step.

Thanks... Edoardo

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采纳的回答

Azzi Abdelmalek 2012-11-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/52614-how-can-i-sum-a-matrix-in-a-for-loop#answer_64130

在 MATLAB Online 中打开

z=0;
stream=[2 3 4 5 4 5 6 7];
y=[1 2 3 4; 2 3 4 5 ; 1 2 3 4;1 2 3 4; 3 4 5 6];
for t=0:10
  U=stream(randi(length(stream)));
  z=bsxfun(@plus,z,U.*y) 
end