recall updated vector from a loop

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Gaetano Pavone 2019-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/487038-recall-updated-vector-from-a-loop

评论： Guillaume 2019-10-23

I have a column vector "displacement" with 18 elements, which is updated at every iteration (Nsteps) in a loop.

I would like to obtain a matrix such that each column is the displacement vector at each iteration. How can I do this?

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Answer 1

Joe Vinciguerra 2019-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/487038-recall-updated-vector-from-a-loop#answer_397918

在 MATLAB Online 中打开

nLoops = 5; % number of times to loop
nElem = 18; % number of elements in each vector (let's use it as long as you know what it is
combinedResults = zeros(nElem,nLoops); % it's good practice to preallocate variables generated in a loop
for i = 1:nLoops
    displacement = rand(nElem,1); % I don't have your data, so I'm using rand to simulate it
    combinedResults(:,i) = displacement; % Here's where it sounds like you need help. The column you save to increments with i.
end