i've a matrix of 6x4 and i want to count the rows how many times it occur in a matrix
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let say the matrix is
A=[ 12 45 67 89
34 56 78 65
12 45 67 89
53 55 21 90
12 45 67 89
53 55 21 90 ]
i want the output to be as:
12 45 67 89 ----- 3 % because it occurs 3 times
34 56 78 65 ------1
53 55 21 90 ------2
plz help me
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Accepted Answer
Azzi Abdelmalek
on 8 May 2013
A=[ 12 45 67 89
34 56 78 65
12 45 67 89
53 55 21 90
12 45 67 89
53 55 21 90 ]
[a,b,c]=unique(A,'rows','stable');
v=arrayfun(@(x) sum(c==x),1:size(a,1))';
out=[a v]
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Emma Cairns
on 9 Aug 2017
I have an instance where I need to do this twice with two separate matrices and I keep getting the same output for both using this code, is there any way I can make it work? Thanks!
More Answers (1)
Andrei Bobrov
on 8 May 2013
A=[ 12 45 67 89
34 56 78 65
12 45 67 89
53 55 21 90
12 45 67 89
53 55 21 90 ];
[a,c,c] = unique(A,'rows');
out = [a, histc(c,1:max(c))];
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