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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 on 17 Oct 2019
Closed: MATLAB Answer Bot on 20 Aug 2021
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);
Stephen23 on 18 Oct 2019
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).

Kevin Phung on 17 Oct 2019
Edited: Kevin Phung on 17 Oct 2019
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...
jack joke on 17 Oct 2019
it was
for i=1:10
eval(['KG' num2str(i) '= zeros (28,28)']);
end

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