diff --git a/jsprit-examples/src/main/java/jsprit/examples/EnRoutePickupAndDeliveryWithMultipleDepotsExample.java b/jsprit-examples/src/main/java/jsprit/examples/EnRoutePickupAndDeliveryWithMultipleDepotsExample.java new file mode 100644 index 00000000..dfd69fd2 --- /dev/null +++ b/jsprit-examples/src/main/java/jsprit/examples/EnRoutePickupAndDeliveryWithMultipleDepotsExample.java @@ -0,0 +1,146 @@ +/******************************************************************************* + * Copyright (C) 2013 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 . + ******************************************************************************/ +package jsprit.examples; + +import java.util.Arrays; +import java.util.Collection; + +import jsprit.analysis.toolbox.GraphStreamViewer; +import jsprit.analysis.toolbox.GraphStreamViewer.Label; +import jsprit.analysis.toolbox.Plotter; +import jsprit.analysis.toolbox.SolutionPrinter; +import jsprit.core.algorithm.VehicleRoutingAlgorithm; +import jsprit.core.algorithm.io.VehicleRoutingAlgorithms; +import jsprit.core.problem.VehicleRoutingProblem; +import jsprit.core.problem.VehicleRoutingProblem.FleetSize; +import jsprit.core.problem.io.VrpXMLWriter; +import jsprit.core.problem.job.Shipment; +import jsprit.core.problem.solution.VehicleRoutingProblemSolution; +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.util.Coordinate; +import jsprit.core.util.Solutions; +import jsprit.util.Examples; + + +public class EnRoutePickupAndDeliveryWithMultipleDepotsExample { + + 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("vehicleType", 2); + vehicleTypeBuilder.setCostPerDistance(1.0); + VehicleType vehicleType = vehicleTypeBuilder.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 = VehicleImpl.Builder.newInstance("vehicles@[10,10]"); + vehicleBuilder1.setLocationCoord(Coordinate.newInstance(10, 10)); + vehicleBuilder1.setType(vehicleType); + Vehicle vehicle1 = vehicleBuilder1.build(); + + Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[50,50]"); + vehicleBuilder2.setLocationCoord(Coordinate.newInstance(50, 50)); + vehicleBuilder2.setType(vehicleType); + Vehicle 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) + */ + + Shipment shipment1 = Shipment.Builder.newInstance("1", 1).setPickupCoord(Coordinate.newInstance(5, 7)).setDeliveryCoord(Coordinate.newInstance(6, 9)).build(); + Shipment shipment2 = Shipment.Builder.newInstance("2", 1).setPickupCoord(Coordinate.newInstance(5, 13)).setDeliveryCoord(Coordinate.newInstance(6, 11)).build(); + + Shipment shipment3 = Shipment.Builder.newInstance("3", 1).setPickupCoord(Coordinate.newInstance(15, 7)).setDeliveryCoord(Coordinate.newInstance(14, 9)).build(); + Shipment shipment4 = Shipment.Builder.newInstance("4", 1).setPickupCoord(Coordinate.newInstance(15, 13)).setDeliveryCoord(Coordinate.newInstance(14, 11)).build(); + + Shipment shipment5 = Shipment.Builder.newInstance("5", 1).setPickupCoord(Coordinate.newInstance(55, 57)).setDeliveryCoord(Coordinate.newInstance(56, 59)).build(); + Shipment shipment6 = Shipment.Builder.newInstance("6", 1).setPickupCoord(Coordinate.newInstance(55, 63)).setDeliveryCoord(Coordinate.newInstance(56, 61)).build(); + + Shipment shipment7 = Shipment.Builder.newInstance("7", 1).setPickupCoord(Coordinate.newInstance(65, 57)).setDeliveryCoord(Coordinate.newInstance(64, 59)).build(); + Shipment shipment8 = Shipment.Builder.newInstance("8", 1).setPickupCoord(Coordinate.newInstance(65, 63)).setDeliveryCoord(Coordinate.newInstance(64, 61)).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.setFleetSize(FleetSize.FINITE); + VehicleRoutingProblem problem = vrpBuilder.build(); + + /* + * get the algorithm out-of-the-box. + */ + VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig_noVehicleSwitch.xml"); + algorithm.setNuOfIterations(30000); + /* + * and search a solution + */ + Collection solutions = algorithm.searchSolutions(); + + /* + * get the best + */ + VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions); + + /* + * write out problem and solution to xml-file + */ + new VrpXMLWriter(problem, solutions).write("output/shipment-problem-with-solution.xml"); + + /* + * print nRoutes and totalCosts of bestSolution + */ + SolutionPrinter.print(bestSolution); + + /* + * plot problem without solution + */ + Plotter problemPlotter = new Plotter(problem); + problemPlotter.plotShipments(true); + problemPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_problem.png", "en-route pickup and delivery"); + + /* + * plot problem with solution + */ + Plotter solutionPlotter = new Plotter(problem,Arrays.asList(Solutions.bestOf(solutions).getRoutes().iterator().next())); + solutionPlotter.plotShipments(true); + solutionPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_solution.png", "en-route pickup and delivery"); + + new GraphStreamViewer(problem,Solutions.bestOf(solutions)).labelWith(Label.ACTIVITY).setRenderDelay(100).setRenderShipments(true).display(); + + } + +} +