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added example
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package jsprit.examples;
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import java.util.Collection;
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import jsprit.analysis.toolbox.GraphStreamViewer;
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import jsprit.analysis.toolbox.GraphStreamViewer.Label;
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import jsprit.analysis.toolbox.SolutionPrinter;
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import jsprit.core.algorithm.VehicleRoutingAlgorithm;
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import jsprit.core.algorithm.io.VehicleRoutingAlgorithms;
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import jsprit.core.algorithm.termination.IterationWithoutImprovementTermination;
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import jsprit.core.problem.VehicleRoutingProblem;
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import jsprit.core.problem.VehicleRoutingProblem.FleetSize;
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import jsprit.core.problem.constraint.HardRouteStateLevelConstraint;
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import jsprit.core.problem.job.Shipment;
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import jsprit.core.problem.misc.JobInsertionContext;
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import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
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import jsprit.core.problem.vehicle.Vehicle;
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import jsprit.core.problem.vehicle.VehicleImpl;
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import jsprit.core.problem.vehicle.VehicleImpl.Builder;
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import jsprit.core.problem.vehicle.VehicleType;
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import jsprit.core.problem.vehicle.VehicleTypeImpl;
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import jsprit.core.util.Coordinate;
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import jsprit.core.util.Solutions;
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import jsprit.util.Examples;
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public class TransportOfDisabledPeople {
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static int WHEELCHAIRSPACE_INDEX = 0;
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static int PASSENGERSEATS_INDEX = 1;
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public static void main(String[] args) {
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/*
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* some preparation - create output folder
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*/
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Examples.createOutputFolder();
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/*
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* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
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*/
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VehicleTypeImpl.Builder wheelChairTypeBuilder = VehicleTypeImpl.Builder.newInstance("wheelChairBusType")
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.addCapacityDimension(WHEELCHAIRSPACE_INDEX, 2) //can transport two people with wheelchair
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.addCapacityDimension(PASSENGERSEATS_INDEX, 4); //and 4 without
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VehicleType vehicleType_wheelchair = wheelChairTypeBuilder.build();
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VehicleTypeImpl.Builder soleyPassengerTypeBuilder = VehicleTypeImpl.Builder.newInstance("passengerBusType")
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.addCapacityDimension(PASSENGERSEATS_INDEX, 6); //and 4 without
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VehicleType vehicleType_solelypassenger = soleyPassengerTypeBuilder.build();
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/*
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* define two vehicles and their locations.
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*
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* this example employs two vehicles. one that has to return to its start-location (vehicle1) and one that has a different
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* end-location.
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*
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* play with these location to see which impact they have on customer-sequences.
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*/
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Builder vehicleBuilder1 = VehicleImpl.Builder.newInstance("wheelchair_bus");
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vehicleBuilder1.setStartLocationCoordinate(Coordinate.newInstance(10, 10));
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vehicleBuilder1.setType(vehicleType_wheelchair);
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Vehicle vehicle1 = vehicleBuilder1.build();
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Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("passenger_bus");
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vehicleBuilder2.setStartLocationCoordinate(Coordinate.newInstance(30, 30)).setEndLocationCoordinate(Coordinate.newInstance(30, 19));
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vehicleBuilder2.setType(vehicleType_solelypassenger);
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Vehicle vehicle2 = vehicleBuilder2.build();
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/*
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* build shipments at the required locations, each with a capacity-demand of 1.
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*
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*/
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Shipment shipment1 = Shipment.Builder.newInstance("wheelchair_1").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 7)).setDeliveryCoord(Coordinate.newInstance(6, 9)).build();
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Shipment shipment2 = Shipment.Builder.newInstance("2").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 13)).setDeliveryCoord(Coordinate.newInstance(6, 11)).build();
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Shipment shipment3 = Shipment.Builder.newInstance("wheelchair_2").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 7)).setDeliveryCoord(Coordinate.newInstance(14, 9)).build();
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Shipment shipment4 = Shipment.Builder.newInstance("4").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 13)).setDeliveryCoord(Coordinate.newInstance(14, 11)).build();
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Shipment shipment5 = Shipment.Builder.newInstance("wheelchair_3").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(25, 27)).setDeliveryCoord(Coordinate.newInstance(26, 29)).build();
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Shipment shipment6 = Shipment.Builder.newInstance("6").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(25, 33)).setDeliveryCoord(Coordinate.newInstance(26, 31)).build();
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Shipment shipment7 = Shipment.Builder.newInstance("7").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(35, 27)).setDeliveryCoord(Coordinate.newInstance(34, 29)).build();
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Shipment shipment8 = Shipment.Builder.newInstance("wheelchair_4").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(35, 33)).setDeliveryCoord(Coordinate.newInstance(34, 31)).build();
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Shipment shipment9 = Shipment.Builder.newInstance("9").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 27)).setDeliveryCoord(Coordinate.newInstance(6, 29)).build();
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Shipment shipment10 = Shipment.Builder.newInstance("wheelchair_5").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 33)).setDeliveryCoord(Coordinate.newInstance(6, 31)).build();
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Shipment shipment11 = Shipment.Builder.newInstance("11").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 27)).setDeliveryCoord(Coordinate.newInstance(14, 29)).build();
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Shipment shipment12 = Shipment.Builder.newInstance("wheelchair_6").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 33)).setDeliveryCoord(Coordinate.newInstance(14, 31)).build();
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Shipment shipment13 = Shipment.Builder.newInstance("13").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(25, 7)).setDeliveryCoord(Coordinate.newInstance(26, 9)).build();
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Shipment shipment14 = Shipment.Builder.newInstance("wheelchair_7").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(25, 13)).setDeliveryCoord(Coordinate.newInstance(26, 11)).build();
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Shipment shipment15 = Shipment.Builder.newInstance("15").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(35, 7)).setDeliveryCoord(Coordinate.newInstance(34, 9)).build();
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Shipment shipment16 = Shipment.Builder.newInstance("wheelchair_8").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(35, 13)).setDeliveryCoord(Coordinate.newInstance(34, 11)).build();
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Shipment shipment17 = Shipment.Builder.newInstance("17").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 14)).setDeliveryCoord(Coordinate.newInstance(6, 16)).build();
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Shipment shipment18 = Shipment.Builder.newInstance("wheelchair_9").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(5, 20)).setDeliveryCoord(Coordinate.newInstance(6, 18)).build();
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Shipment shipment19 = Shipment.Builder.newInstance("19").addSizeDimension(PASSENGERSEATS_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 14)).setDeliveryCoord(Coordinate.newInstance(14, 16)).build();
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Shipment shipment20 = Shipment.Builder.newInstance("wheelchair_10").addSizeDimension(WHEELCHAIRSPACE_INDEX, 1).setPickupCoord(Coordinate.newInstance(15, 20)).setDeliveryCoord(Coordinate.newInstance(14, 18)).build();
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VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
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vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2);
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vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
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vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
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vrpBuilder.addJob(shipment9).addJob(shipment10).addJob(shipment11).addJob(shipment12);
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vrpBuilder.addJob(shipment13).addJob(shipment14).addJob(shipment15).addJob(shipment16);
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vrpBuilder.addJob(shipment17).addJob(shipment18).addJob(shipment19).addJob(shipment20);
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//you only have two vehicles
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vrpBuilder.setFleetSize(FleetSize.FINITE);
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/*
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*
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* wheelchair-bus can only pickup passenger where x<15
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*/
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HardRouteStateLevelConstraint wheelchair_bus_passenger_pickup_constraint = new HardRouteStateLevelConstraint() {
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@Override
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public boolean fulfilled(JobInsertionContext insertionContext) {
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Shipment shipment2insert = ((Shipment)insertionContext.getJob());
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if(insertionContext.getNewVehicle().getId().equals("wheelchair_bus")){
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if(shipment2insert.getSize().get(PASSENGERSEATS_INDEX)>0){
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if(shipment2insert.getPickupCoord().getX() > 15. || shipment2insert.getDeliveryCoord().getX() > 15.){
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return false;
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}
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}
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}
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return true;
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}
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};
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//add the constraint to the problem
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vrpBuilder.addConstraint(wheelchair_bus_passenger_pickup_constraint);
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//build the problem
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VehicleRoutingProblem problem = vrpBuilder.build();
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/*
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* get a sample algorithm.
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*
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* Note that you need to make sure to prohibit vehicle-switching by adding the insertion-tag <vehicleSwitchAllowed>false</vehicleSwitchAllowed>.
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* This way you make sure that no vehicle can take over a route that is employed by another. Allowing this might make sense when dealing with
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* a heterogeneous fleet and you want to employ a bigger vehicle on a still existing route. However, allowing it makes constraint-checking
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* bit more complicated and you cannot just add the above hard-constraint. Latter will be covered in another example.
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*
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*/
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VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig_noVehicleSwitch.xml");
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algorithm.setPrematureAlgorithmTermination(new IterationWithoutImprovementTermination(100));
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// algorithm.setNuOfIterations(30000);
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/*
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* and search a solution
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*/
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Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
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/*
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* get the best
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*/
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VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
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/*
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* write out problem and solution to xml-file
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*/
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// new VrpXMLWriter(problem, solutions).write("output/shipment-problem-with-solution.xml");
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/*
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* print nRoutes and totalCosts of bestSolution
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*/
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SolutionPrinter.print(bestSolution);
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/*
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* plot problem without solution
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*/
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// Plotter problemPlotter = new Plotter(problem);
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// problemPlotter.plotShipments(true);
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// problemPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_problem.png", "en-route pickup and delivery");
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//
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// /*
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// * plot problem with solution
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// */
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// Plotter solutionPlotter = new Plotter(problem,Arrays.asList(Solutions.bestOf(solutions).getRoutes().iterator().next()));
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// solutionPlotter.plotShipments(true);
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// solutionPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_solution.png", "en-route pickup and delivery");
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new GraphStreamViewer(problem).labelWith(Label.ID).setRenderDelay(100).setRenderShipments(true).display();
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new GraphStreamViewer(problem,Solutions.bestOf(solutions)).labelWith(Label.ACTIVITY).setRenderDelay(100).setRenderShipments(true).display();
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}
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}
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