How can I extract the logical value in a loop (various columns)?

Question

DulceEien 2021-8-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1442114-how-can-i-extract-the-logical-value-in-a-loop-various-columns

评论： DulceEien 2021-9-2

Hello, I'm runnning my code and my logical value is running, what I would like to do is exctract the logical value for several columns (from column 5 to 10) can I do it in a loop or I have to name various variables and then join them?

  idx=logical(idx);
  [X,Y]= meshgrid(T2.length,T.length);
  C = X(idx);
  D = Y(idx); 
  delta = (C - D);
  
  t = table(D,C,delta);

T2 and T are the table were I'm talking the values lenght is in the 5th column and I would like to do the same for column 6,7,8,9,10 is it possible without naming them again? and then do the substraction?

have a nice Friyay

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Answer 1

Kevin Holly 2021-8-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1442114-how-can-i-extract-the-logical-value-in-a-loop-various-columns#answer_775744

编辑：Kevin Holly 2021-8-27

在 MATLAB Online 中打开

is this what you are looking for?

idx=logical(idx);
for i = 5:10  
[X,Y]= meshgrid(T2.(i),T.(i));
  C = X(idx);
  D = Y(idx); 
  delta = (C - D);
  
  T(i-4).table = table(D,C,delta);
end

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Kevin Holly 2021-8-31

在 MATLAB Online 中打开

NewTable = []
for i =1:5
M = table2array(T(i).table)  %table(D,C,delta);
NewTable = [NewTable M]
end
FinalTable = array2table(NewTable,"VariableNames",["D1","C1","delta1","D2","C2","delta2","D3","C3","delta3","D4","C4","delta4","D5","C5","delta5"]);

or

idx=logical(idx);
M = [];
for i = 5:10  
[X,Y]= meshgrid(T2.(i),T.(i));
  C = X(idx);
  D = Y(idx); 
  delta = (C - D);
  M = [M D,C,delta]
end
t = array2table(M,"VariableNames",["D1","C1","delta1","D2","C2","delta2","D3","C3","delta3","D4","C4","delta4","D5","C5","delta5"]);