Count the frequent numbers in the matrix based on the sequence in the matrix ?
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I like to count the frequent numbers in the matrix based on the sequence in the matrix /// EX: Y = [ 5 4 4 2 ; 6 3 3 1 ;2 4 2 2; 5 5 6 1] The answer suppose to be like: 5 3, 4 3, 2 4 , 6 2, 3 2, 1 2 /// That mean the 5 repeated 2 times, the 4 repeated three times and so on .. /// The an important point is the number based on the sequence in the matrix which 5,4,2,6,3,1 /// not Descending or Ascending /// thanks
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Accepted Answer
the cyclist
on 22 Mar 2017
Here's one way:
Y = [ 5 4 4 2 ; 6 3 3 1 ;2 4 2 2; 5 5 6 1];
YT = Y';
[uniqueY, ~, j] = unique(YT(:),'stable');
ycounts = histcounts(j,[unique(j); Inf]);
output = [uniqueY,ycounts']
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