Number of non-zero element

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Hg
Hg on 16 Mar 2016
Commented: Hg on 16 Mar 2016
I have n-number of arrays, I want to find the total non-zero element at a location. For example there are three arrays as following:
A = [2 0 0 2;
0 1 1 1;
1 3 0 0;
0 1 0 1];
B = [0 2 1 0;
3 1 1 1;
2 0 0 2;
0 1 0 1];
C = [0 2 3 0;
3 1 2 2;
4 0 2 1;
2 0 0 1]
How can I find the total number of non-zero elements in A, B, C for each location, e.g (1,1): 1, (1,2): 2, (1,3): 2 ? To get array D = [1 2 2 1; 2 3 3 3; ... ].

Accepted Answer

James Tursa
James Tursa on 16 Mar 2016
Edited: James Tursa on 16 Mar 2016
D = sum(cat(3,A,B,C)~=0,3);
  1 Comment
Hg
Hg on 16 Mar 2016
Never thought about that! Thanks!

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