You could duplicate rows or columns in the matrix you pass to matchpairs to reflect that "multiple copies" of the object to be matched are available. Adapting the "Assign Flight with Minimal Cost" example on the matchpairs documentation page:
people = ["Fred"; "Beth"; "Sue"; "Greg"];
cities = ["Dallas"; "Chicago"; "New York City"; "St. Louis"];
C = [600 670 960 560
900 280 970 540
310 350 950 820
325 290 600 540];
C(:, 5) = C(:, 2); % Two people can go to Chicago
cities(5) = cities(2);
M = matchpairs(C, 1000);
for n = 1:height(M)
fprintf("Person %s is going to %s.\n", people(M(n, 1)), cities(M(n, 2)))
end
No one is going to New York City, which makes sense since it has the most expensive flights. Greg is going to Chicago in this modified example, where in the original example Greg went to NYC.
