Any one can help me to check this code ?

Question

Brwa 2013-5-25

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https://ww2.mathworks.cn/matlabcentral/answers/76977-any-one-can-help-me-to-check-this-code

A = [ 1 1 5; 2 1 6; 3 7 5 ];
B = ones(3,3)
S = eye(3,3)
O = [2 7 6; 3 7 0] 
   for j = 1: 1: 3
      R = A(1:end,j)     % get 3 column vectors. therefore i will have 3 (R)'s
      C = B * R ;        % 3x1 vector
      D = [B*S ; O,B*C]
      H = [zeros(3,3); S]
  end

I have doubt about the value of C, does it change with j in the loop?

by the way C is a matrix, i can not write C(j) because i want to use the whole matrix (3x3) not just some specific values inside C.

If i need to change something, please let me know.

Thanks

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Answer 1

Azzi Abdelmalek 2013-5-25

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https://ww2.mathworks.cn/matlabcentral/answers/76977-any-one-can-help-me-to-check-this-code#answer_86625

编辑：Azzi Abdelmalek 2013-5-25

在 MATLAB Online 中打开

There is a small mistake, it should be O' instead of O,

A = [ 1 1 5; 2 1 6; 3 7 5 ];
B = ones(3,3)
S = eye(3,3)
O = [2 7 6; 3 7 0]
for j = 1: 3
  R = A(1:end,j)     % get 3 column vectors. therefore i will have 3 (R)'s
  C = B * R ;        % 3x1 vector
  D = [B*S ; O' B*C]
  H = [zeros(3,3); S]
end