MATLAB: How to define the number of combination of elements that I want to be computed

combinationscombnk

Hi everyone! I would like to compute only a limited number of combination of a given vector's elements… how could I do so? I'm using combnk, but it computes ALL possible combinations and it takes too much RAM (more then 16, that is my limit), so matlab (legitimately) complains. Some of you has any suggestions?

Best Answer

Please check the following link from fileexchange

https://www.mathworks.com/matlabcentral/fileexchange/7147-permn-v--n--k-

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MATLAB: How to generate combinations without storing them in an array

Maybe this FEX submission "COMBINATOR -combinations AND permutations":

http://www.mathworks.com/matlabcentral/fileexchange/24325

There is also a discussion on the topic here:

http://blogs.mathworks.com/pick/2007/03/02/all-combinations-from-vectors/

MATLAB: Generate all cominations

P = dec2bin(0:(2^24)-1)-'0';
P(P==0) = Val1;
P(P==1) = Val2;

Best wishes

Torsten.

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MATLAB: How to generate combinations without storing them in an array

MATLAB: Generate all cominations

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