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sos.m
function sos() % Copyright 2018, Gurobi Optimization, LLC % % This example creates a very simple Special Ordered Set (SOS) % model. The model consists of 3 continuous variables, no linear % constraints, and a pair of SOS constraints of type 1. model.ub = [1 1 2]; model.obj = [2 1 1]; model.modelsense = 'Max'; model.A = sparse(1,3); model.rhs = 0; model.sense = '='; % Add first SOS: x1 = 0 or x2 = 0 model.sos(1).type = 1; model.sos(1).index = [1 2]; model.sos(1).weight = [1 2]; % Add second SOS: x1 = 0 or x3 = 0 model.sos(2).type = 1; model.sos(2).index = [1 3]; model.sos(2).weight = [1 2]; % Write model to file gurobi_write(model, 'sos.lp'); result = gurobi(model); for i=1:3 fprintf('x%d %e\n', i, result.x(i)) end fprintf('Obj: %e\n', result.objval); end