How to find combination of random number of vectors?

Hi all,

Function combvec gives the combination of n vectors. Imagine I have a cell C contains m vectors, how can I find combination of all m vectors without manually input all of them in combvec?

I think I can do this:

C = {[1 2 3] [2 3 4 5] [9 8 2]};

for i = 1:2

      output = combvec(C{i}, C{i + 1});

end

but it only gives me combination of last 2 vectors. Any ideas?

Answer 1

[Star Strider]

Save the results in a cell array:

C = {[1 2 3] [2 3 4 5] [9 8 2]};

for i = 1:2

        output{i} = combvec(C{i}, C{i + 1});

end

[Xiaohan Du]

what I wanted was combination of all vectors in C, manually like:

combvec(C{1}, C{2}, C{3})

Your solution only gives combinations of each 2 vectors.

[Star Strider]

You can actually do just that, since the cell array is itself a comma-separated list:

output = combvec(C{:});

That should do what you want.

[Xiaohan Du]

Oh, this is really interesting, thanks!

[Star Strider]

As always, my pleasure!