Hi, hope this works.
The first column shows the max in the first column.
The second column shows the max in the second column.
The third column shows the unique values in AA.
A = [1 2 3; 2 2 6; 0 1 3; 0 4 3];
[values, tag, places] = unique(A(:, 3));
AA = zeros(length(values), 3);
AA(:, 3) = values;
for i = 1:length(values)
AA(i, 1) = max(A(places == tag(i), 1));
AA(i, 2) = max(A(places == tag(i), 2));
end
