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add example

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oblonski 2016-01-07 07:35:23 +01:00
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jsprit-examples/src/main/java/jsprit/examples/ServicePickupsWithMultipleDepots2Example.java Normal file
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/*******************************************************************************
* 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");
}
}