How to store vectors with different size in a loop ?

Question

Ole 2016-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/275161-how-to-store-vectors-with-different-size-in-a-loop

评论： dpb 2019-4-15

How to store vectors with different size and how to access them. M(k) found_roots

F = @(t) cos(t)*exp(-t);
A = @(s) arrayfun(@(s)-integral(F,-10,s),s);
Z = @(t1,t2) -integral(A,t1,t2);
interval = [-5, 5];
N = 100;
start_pts = linspace(interval(1),interval(2),N);
found_roots = [];
  for k = 1:10
    t2 = k; 
    for i=1:numel(start_pts)-1
      try
        found_roots(end+1) = fzero(@(t1)Z(t1,t2),[start_pts(i),start_pts(i+1)]);
      end
    %     i
    end
  M(k) = found_roots % vector of different length
  k
end

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Benjamin 2019-4-15

But in every loop, if the size of the matrix (output here) changes Matlab gives error of different matrix sizes. Is there anysolution for that.

FYI: my Matlab code generates a matrix of [A] = n*2 and in every loop (for i = 1:10) n changes. I would like to store all A results in another B matrix.