Try our new documentation site (beta).
Filter Content By
Version
Text Search
${sidebar_list_label} - Back
Filter by Language
Sos.java
/* Copyright 2021, 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. */ import gurobi.*; public class Sos { public static void main(String[] args) { try { GRBEnv env = new GRBEnv(); GRBModel model = new GRBModel(env); // Create variables double ub[] = {1, 1, 2}; double obj[] = {-2, -1, -1}; String names[] = {"x0", "x1", "x2"}; GRBVar[] x = model.addVars(null, ub, obj, null, names); // Add first SOS1: x0=0 or x1=0 GRBVar sosv1[] = {x[0], x[1]}; double soswt1[] = {1, 2}; model.addSOS(sosv1, soswt1, GRB.SOS_TYPE1); // Add second SOS1: x0=0 or x2=0 GRBVar sosv2[] = {x[0], x[2]}; double soswt2[] = {1, 2}; model.addSOS(sosv2, soswt2, GRB.SOS_TYPE1); // Optimize model model.optimize(); for (int i = 0; i < 3; i++) System.out.println(x[i].get(GRB.StringAttr.VarName) + " " + x[i].get(GRB.DoubleAttr.X)); // Dispose of model and environment model.dispose(); env.dispose(); } catch (GRBException e) { System.out.println("Error code: " + e.getErrorCode() + ". " + e.getMessage()); } } }