You could use unique to get each unique combination of your row data, and then iteratively count the number of occurrences.
data = [[88; 88; 88; 23; 23], [8600; 8600; 9000; 9000; 9000]];
opts = unique(data, 'rows'); % Unique combinations of columns
nopts = size(opts, 1);
counts = zeros(nopts, 1);
for i=1:nopts % Counts the number of exact matches
counts(i) = nnz(all(data == opts(i,:), 2));
end
dataout = [opts counts];
This takes the example data...
88 8600
88 8600
88 9000
23 9000
23 9000
...and produces this:
23 9000 2
88 8600 2
88 9000 1
which I believe is the information that you're looking for.
