problem for creating vector with for loop

   a={'w','c','e'};

%I wanna create 2 times of w,c,e, with using for loop, like this

 aa={'w','w','c','c','e','e'};

Answer 1

[José-Luis]

a={'w','c','e'};
nRep = 5;
your_mat = reshape(repmat(a,nRep,1),1,[]);

Answer 2

[Justin]

This is not a difficult task to do but does take a little extra planning in how to index the first array.

I'll give you an example of one way to do it but you should try another way as well.

% first define aa as an empty cell
aa = {};
% then create a loop for each element of your original matrix
for i = 1:length(a)
  % now concatenate your aa array with the repeated elements of a (you can just write a(i) twice)
  aa = [aa a(i) a(i)];
end

Other options may be to use repmat, reshape, or indexing differently using a modulo of 2 to increment your index of the original array.

Some of these options will be more robust and able to work when you want to make a triple copy or other elements of your input vary.

[sermet]

I gave 2 for just an example, actual repeating times depends on the situation. For example I wanna repeat 4 and I wanna use repmat, could you show me how I can use repmat for a?

Answer 3

[Jos (10584)]

Many roads to Rome:

    A = {'w' 'c' 'e'}
    n = 2 

    AA1 = A(kron(1:numel(A),ones(1,n)))
    AA2 = reshape(repmat(A,n,1),1,[])
    AA3 = A(ceil(linspace(1/n,numel(A),n*numel(A))))

[José-Luis]

:)

Maybe we should start a thread with the most complicated ways to solve this problem.