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

Asked by jack joke on 17 Oct 2019
Latest activity Commented on by Stephen Cobeldick on 18 Oct 2019
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 Comment

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).

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1 Answer

Answer by Kevin Phung on 17 Oct 2019
Edited by 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...

  1 Comment

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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