How the concatenate every combination of vectors?

Question

Joaquim 2017-5-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/338376-how-the-concatenate-every-combination-of-vectors

回答： Guillaume 2017-5-2

Hello everybody,

I have 6 vectors and i want to concatenate every combination between these vectors in one individual vector. Let's call the six vectors a,b,c,d,e,f.What I want to do is create a several concatenated vector like this:

first_vector=[a]; second_vector=[b]; (...); n_vector=[a b]; (...); last=[a b c d e f];

Can somebody help me? Joaquim

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Answer 1

Guillaume 2017-5-2

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https://ww2.mathworks.cn/matlabcentral/answers/338376-how-the-concatenate-every-combination-of-vectors#answer_265352

在 MATLAB Online 中打开

allvectors = {a, b, c, d, e, f}; %cell array of all the vectors
allcombs = {};
for c = 1:numel(allvectors)
    combidx = nchoosek(1:numel(allvectors), c);
    ccombs = cell(size(combidx, 1), 1);
    for row = 1:numel(ccombs)
       ccombs{row} = [allvectors{combidx(row, :)}];
    end
    allcombs = [allcombs; ccombs];
end