corresponding intersection of two rows without zero in matlab -


i have matrix(m*n). every 2 rows, how can find number of corresponding elements not zero. example following rows: r1=[1,3,0,4] , r2=[5,0,0,4] ,the answer 2. because first , fourth elements in 2 rows not zero. thanks

you can use matrix multiplication:

l = logical(m);     % convert matrix logical matrix result = l * l.';   % matrix multiplication compute number of corresponding elements

so matrix element result(i,j) represents number of corresponding elements between row i , row j.


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