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I don't want to repeat these , I want to use a loop for it

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jack joke
jack joke 2019-10-17
关闭： MATLAB Answer Bot 2021-8-20
I don't want to repeat these all time , I want to use a loop for it instead of copy and paste it all time ?
Can I just use a ( for ) for it ??????
KG1=zeros (28,28);
KG2=zeros (28,28);
KG3=zeros (28,28);
KG4=zeros (28,28);
KG5=zeros (28,28);
KG6=zeros (28,28);
KG7=zeros (28,28);
KG8=zeros (28,28);
KG9=zeros (28,28);
KG10=zeros (28,28);
  1 个评论
Stephen23
Stephen23 2019-10-18
Numbering variables is a sign that you are doing something wrong.
Copy-and-pasting code is a sign that you are doing something wrong.
You can easily avoid both of these issues by using indexing. Indexing is simple, neat, easy to debug, and very efficient (unlike what you are trying to do).
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

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回答（1 个）

Kevin Phung
Kevin Phung 2019-10-17
编辑：Kevin Phung 2019-10-17
perhaps instead of defining 10 variables or dynamically creating them in a for loop, you can store each matrix of zeros as a cell array.
KG = {zeros(28,28)};
KG = repmat(KG,10,1);
% now you can call out each cell array like so:
KG{1};
KG{2};
KG{3};
%etc...
  1 个评论
jack joke
jack joke 2019-10-17
Thanks bro for your answering I just found the answer in another way.
it was
for i=1:10
eval(['KG' num2str(i) '= zeros (28,28)']);
end

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