Help iteration for loop and tables vertcat

Question

Nina Perf 2022-5-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728515-help-iteration-for-loop-and-tables-vertcat

编辑： Nina Perf 2022-5-28

采纳的回答： Stephen23

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Hi,

I have a varible C which is a 45x2 double with the possible combinations of numbers, #, from 1 to 10 (meaning 10 birds).
Per bird I have a table named tablevars#, where # are numbers from 1 to 10.
I want to have inside the for cycle the total table that will change per combination (matches each row of C per iteration i).

tablevars1
tablevars2
...
w =  [1:10];
p = 2;
C = nchoosek(w,p);
u = length(C);
for i = 1:u
    total = vertcat(?);
    ...
end

Thank you!

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Stephen23 2022-5-27

Do NOT force meta-data (e.g. pseudo-indices) into variable names:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

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Answer 1

Stephen23 2022-5-27

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1728515-help-iteration-for-loop-and-tables-vertcat#answer_972930

编辑：Stephen23 2022-5-27

在 MATLAB Online 中打开

Using one cell array will be much simpler (and more efficient) than your approach of numbering the variable names:

w = 1:10; % removed superfluous square brackets
p = 2;
C = nchoosek(w,p)
C = 45×2
     1     2
     1     3
     1     4
     1     5
     1     6
     1     7
     1     8
     1     9
     1    10
     2     3
tbl = { table(..), table(..), table(..) .. }; % cell is better than numbered variable names.
for k = 1:size(C,1)
    idx = C(k,:);
    out = vertcat(T{idx})
    ..
end