add example

jsprit-examples/src/main/java/jsprit/examples/ServicePickupsWithMultipleDepots2Example.java

@@ -0,0 +1,158 @@
+/*******************************************************************************
+ * Copyright (C) 2014  Stefan Schroeder
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3.0 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ ******************************************************************************/
+package jsprit.examples;
+
+import jsprit.analysis.toolbox.Plotter;
+import jsprit.core.algorithm.VehicleRoutingAlgorithm;
+import jsprit.core.algorithm.box.Jsprit;
+import jsprit.core.problem.Location;
+import jsprit.core.problem.VehicleRoutingProblem;
+import jsprit.core.problem.cost.VehicleRoutingActivityCosts;
+import jsprit.core.problem.driver.Driver;
+import jsprit.core.problem.job.Service;
+import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
+import jsprit.core.problem.solution.route.activity.TourActivity;
+import jsprit.core.problem.vehicle.Vehicle;
+import jsprit.core.problem.vehicle.VehicleImpl;
+import jsprit.core.problem.vehicle.VehicleImpl.Builder;
+import jsprit.core.problem.vehicle.VehicleType;
+import jsprit.core.problem.vehicle.VehicleTypeImpl;
+import jsprit.core.reporting.SolutionPrinter;
+import jsprit.core.util.Solutions;
+import jsprit.util.Examples;
+
+import java.util.Collection;
+
+
+public class ServicePickupsWithMultipleDepots2Example {
+
+    public static void main(String[] args) {
+        /*
+         * some preparation - create output folder
+		 */
+        Examples.createOutputFolder();
+
+		/*
+         * get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
+		 */
+        VehicleTypeImpl.Builder vehicleTypeBuilder = VehicleTypeImpl.Builder.newInstance("vehicleType1").addCapacityDimension(0, 8);
+        vehicleTypeBuilder.setCostPerDistance(1.0);
+        VehicleType vehicleType = vehicleTypeBuilder.build();
+
+        VehicleTypeImpl.Builder vehicleTypeBuilder2 = VehicleTypeImpl.Builder.newInstance("vehicleType2").addCapacityDimension(0, 8);
+        vehicleTypeBuilder2.setCostPerDistance(1.0);
+        VehicleType vehicleType2 = vehicleTypeBuilder2.build();
+
+		/*
+         * define two depots, i.e. two vehicle locations ([10,10],[50,50]) and equip them with an infinite number of vehicles of type 'vehicleType'
+		 */
+        Builder vehicleBuilder1 = Builder.newInstance("vehicles@[10,10]");
+        vehicleBuilder1.setStartLocation(Location.newInstance(10, 10));
+        vehicleBuilder1.setType(vehicleType);
+        VehicleImpl vehicle1 = vehicleBuilder1.build();
+
+        Builder vehicleBuilder2 = Builder.newInstance("vehicles@[50,50]");
+        vehicleBuilder2.setStartLocation(Location.newInstance(50, 50));
+        vehicleBuilder2.setType(vehicleType2);
+        VehicleImpl vehicle2 = vehicleBuilder2.build();
+
+
+		/*
+         * build shipments at the required locations, each with a capacity-demand of 1.
+		 * 4 shipments
+		 * 1: (5,7)->(6,9)
+		 * 2: (5,13)->(6,11)
+		 * 3: (15,7)->(14,9)
+		 * 4: (15,13)->(14,11)
+		 */
+
+        Service shipment1 = Service.Builder.newInstance("1")
+            .setServiceTime(20.).addSizeDimension(0, 1).setLocation(Location.newInstance(5, 7)).build();
+        Service shipment2 = Service.Builder.newInstance("2")
+            .setServiceTime(20.).addSizeDimension(0, 1).setLocation(Location.newInstance(5, 13)).build();
+
+        Service shipment3 = Service.Builder.newInstance("3")
+            .setServiceTime(20).addSizeDimension(0, 1).setLocation(Location.newInstance(15, 7)).build();
+        Service shipment4 = Service.Builder.newInstance("4")
+            .setServiceTime(20.).addSizeDimension(0, 1).setLocation(Location.newInstance(15, 13)).build();
+
+        Service shipment5 = Service.Builder.newInstance("5")
+            .setServiceTime(20).addSizeDimension(0, 1).setLocation(Location.newInstance(55, 57)).build();
+        Service shipment6 = Service.Builder.newInstance("6")
+            .setServiceTime(20).addSizeDimension(0, 1).setLocation(Location.newInstance(55, 63)).build();
+
+        Service shipment7 = Service.Builder.newInstance("7")
+            .setServiceTime(20).addSizeDimension(0, 1).setLocation(Location.newInstance(65, 57)).build();
+        Service shipment8 = Service.Builder.newInstance("8")
+            .setServiceTime(20).addSizeDimension(0, 1).setLocation(Location.newInstance(65, 63)).build();
+
+
+        VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
+        vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2);
+        vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
+        vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
+
+        vrpBuilder.setActivityCosts(new VehicleRoutingActivityCosts() {
+
+            @Override
+            public double getActivityCost(TourActivity tourAct, double arrivalTime, Driver driver, Vehicle vehicle) {
+                return 0;
+            }
+
+            @Override
+            public double getActivityDuration(TourActivity tourAct, double arrivalTime, Driver driver, Vehicle vehicle) {
+                if(vehicle.getType().getTypeId().equals("vehicleType1")){
+                    return tourAct.getOperationTime();
+                }
+                else return tourAct.getOperationTime() / 10.;
+            }
+
+        });
+//		vrpBuilder.setFleetSize(FleetSize.FINITE);
+        VehicleRoutingProblem problem = vrpBuilder.build();
+
+		/*
+         * get the algorithm out-of-the-box.
+		 */
+        VehicleRoutingAlgorithm algorithm = Jsprit.createAlgorithm(problem);
+        algorithm.setMaxIterations(100);
+
+		/*
+         * and search a solution
+		 */
+        Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
+
+		/*
+         * get the best
+		 */
+        VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
+
+		/*
+		 * print nRoutes and totalCosts of bestSolution
+		 */
+        SolutionPrinter.print(problem,bestSolution, SolutionPrinter.Print.VERBOSE);
+
+		/*
+		 * plot problem with solution
+		 */
+        Plotter solutionPlotter = new Plotter(problem, bestSolution);
+        solutionPlotter.plot("output/plot.png", "vehicle dependent service time");
+
+
+    }
+
+}