saving the output matrices of for loop ?

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Abdelwahab Fawzy 2016-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/302580-saving-the-output-matrices-of-for-loop

回答： Image Analyst 2016-9-10

采纳的回答： Image Analyst

if i have (for loop) (for i=1:r) which generate a matrix of (m,3) dimensions at each time

i want to save these matrices in only one matrix (mr,3)

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Answer 1

Image Analyst 2016-9-10

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Try something like this:

m = 4; % Whatever you want.
r = 5; % Whatever you want.
% Preallocate the 3-D array 
% to hold all the 2-D m-by-3 matrices.
matrix3d = zeros(m, 3, r);
for k = 1 : r
  thisMatrix = rand(m, 3); % Whatever you want.
  matrix3d(:, :, k) = thisMatrix;
end