trans/graphhopper-jsprit
1
0
Fork 0
mirror of https://github.com/graphhopper/jsprit.git synced 2020-01-24 07:45:05 +01:00
Code Issues Releases Wiki Activity

added example

Browse source
This commit is contained in:
oblonski 2014-02-10 16:28:02 +01:00
parent dc24411802
commit 941e4ae29b
1 changed files with 146 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

146
jsprit-examples/src/main/java/jsprit/examples/EnRoutePickupAndDeliveryWithMultipleDepotsExample.java Normal file
View file

@ -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 <http://www.gnu.org/licenses/>.
******************************************************************************/
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<VehicleRoutingProblemSolution> 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();
}
}