how to make my code simpler ?

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meryem berrada 2018-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/409019-how-to-make-my-code-simpler

评论： meryem berrada 2018-7-5

Hello, I have a vector named TB consisting of the mean of variables named T1B, T2B, ..., T44B. I imported these variables from an excel file. Is there a way to simplify the code?

TB=[mean(T1B), mean(T2B), mean(T3B), mean(T4B), mean(T5B),...
    mean(T6B), mean(T7B), mean(T8B), mean(T9B), mean(T10B), mean(T11B),...
    mean(T12B), mean(T13B), mean(T14B), mean(T15B), mean(T16B), mean(T17B),...
    mean(T18B), mean(T19B), mean(T20B), mean(T21B), mean(T22B), mean(T23B),...
    mean(T24B), mean(T25B), mean(T26B), mean(T27B), mean(T28B), mean(T29B),...
    mean(T30B), mean(T31B), mean(T32B), mean(T33B), mean(T34B), mean(T35B),...
    mean(T36B), mean(T37B), mean(T38B), mean(T39B),mean(T40B), mean(T41B),...
    mean(T42B), mean(T43B), mean(T44B)];

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Answer 1

Magdy Saleh 2018-7-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/409019-how-to-make-my-code-simpler#answer_327672

在 MATLAB Online 中打开

Try something like:

for i=1:num_elems %assuming you know the number of elements and have set it before hand
  eval(['TB(i) = mean(T' num2str(i) 'B);'])
end

What this does is that it evaluates the string as matlab code. Using eval is not recommended in general, but might make life easier for you here. (See Using Eval)