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Help with creating a for loop

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Matlab1364
Matlab1364 2017-5-28
关闭： MATLAB Answer Bot 2021-8-20
How do I create a for loop for the function below, where the Block numbers go from 1 to 5 and the Trial numbers vary with each block. Some have up to 10 trials and some of them less.
A11=find((Block==1 & Trial==1)==1);
A12=find((Block==1 & Trial==2)==1);
…
A21= find((Block==2 & Trial==1)==1);
A22= find((Block==2 & Trial==2)==1);
…
  2 个评论
KSSV
KSSV 2017-5-29
Question is not clear.......elaborate it.
Stephen23
Stephen23 2017-5-29
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
https://www.mathworks.com/matlabcentral/answers/57445-faq-how-can-i-create-variables-a1-a2-a10-in-a-loop
https://www.mathworks.com/help/matlab/matlab_prog/string-evaluation.html
"A frequent use of the eval function is to create sets of variables such as A1, A2, ..., An, but this approach does not use the array processing power of MATLAB and is not recommended. The preferred method is to store related data in a single array"

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回答（1 个）

ES
ES 2017-5-29
BlockCount=5;
Trials = 20;
for iLoop1=1:BlockCount
for iLoop2:1:Trials
A(iLoop1, iLoop2) = find((iLoop1==1 & iLoop2==1)==1);
end
end

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