how to find subsets of different matrices

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Sravan Kumar
Sravan Kumar on 25 Mar 2016
Answered: Stephen23 on 25 Mar 2016
i have matrices as c1=[1 5 6] c2=[3 2 0] c3=[4 7 0] and another matrix as b=[3 5 6]. now the elements in b matrix appears more in which of c1 c2 c3. assign this b matrix to that. for this problem the b=[3 5 6] goes to c1. so the required output will be [1 5 6], [3 5 6]

Accepted Answer

Stephen23
Stephen23 on 25 Mar 2016
Numbered variables are a bad idea. Using numbered variables will make writing code harder. So the first thing to do is put all of those C1s into one variable M:
>> M = [c1;c2;c3]
M =
1 5 6
3 2 0
4 7 0
Then your task is trivial using bsxfun, sum, and max:
>> [~,idx] = max(sum(bsxfun(@eq,M,b),2));
>> [M(idx,:);b]
ans =
1 5 6
3 5 6

More Answers (1)

Joseph Cheng
Joseph Cheng on 25 Mar 2016
use the function ismember(). with that you can see which matrices have the most in common.
  1 Comment
Sravan Kumar
Sravan Kumar on 25 Mar 2016
can u please give some more imformation. how to use ismember() for the given problem

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