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

mtw

Browse source
This commit is contained in:
oblonski 2015-12-13 19:55:32 +01:00
parent 02c3c96e9c
commit 1075e38504
9 changed files with 177 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

124
jsprit-examples/src/main/java/jsprit/examples/MultipleTimeWindowExample.java Normal file
View file

@ -0,0 +1,124 @@
/*******************************************************************************
* 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.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.box.Jsprit;
import jsprit.core.problem.Location;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.job.Service;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
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.ManhattanCosts;
import jsprit.core.util.Solutions;
import java.util.Collection;
public class MultipleTimeWindowExample {
public static void main(String[] args) {
/*
* get a vehicle type-builder and build a type with the typeId "vehicleType" and one capacity dimension, i.e. weight, and capacity dimension value of 2
*/
final int WEIGHT_INDEX = 0;
VehicleTypeImpl.Builder vehicleTypeBuilder = VehicleTypeImpl.Builder.newInstance("vehicleType")
.addCapacityDimension(WEIGHT_INDEX, 10).setCostPerWaitingTime(1.);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType"
*/
Builder vehicleBuilder = Builder.newInstance("vehicle");
vehicleBuilder.setStartLocation(Location.newInstance(0, 0));
vehicleBuilder.setType(vehicleType);
VehicleImpl vehicle = vehicleBuilder.build();
/*
* build services at the required locations, each with a capacity-demand of 1.
*/
Service service1 = Service.Builder.newInstance("1")
.addTimeWindow(5, 10)
.addTimeWindow(20,35)
.addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(10, 0)).build();
Service service2 = Service.Builder.newInstance("2")
.addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(20, 0)).build();
Service service3 = Service.Builder.newInstance("3")
.addTimeWindow(5, 10)
.addTimeWindow(35, 40)
.addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(30, 0)).build();
Service service4 = Service.Builder.newInstance("4")
// .addTimeWindow(5,10)
.addTimeWindow(20, 40)
.addTimeWindow(70, 80)
.addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(40, 0)).build();
Service service5 = Service.Builder.newInstance("5")
.addTimeWindow(5,10)
// .addTimeWindow(20, 40)
.addTimeWindow(35,100)
.addSizeDimension(WEIGHT_INDEX, 1).setLocation(Location.newInstance(20, 0)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle);
vrpBuilder.addJob(service1).addJob(service2)
.addJob(service3)
.addJob(service4)
.addJob(service5)
;
vrpBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE);
vrpBuilder.setRoutingCost(new ManhattanCosts());
VehicleRoutingProblem problem = vrpBuilder.build();
/*
* get the algorithm out-of-the-box.
*/
VehicleRoutingAlgorithm algorithm = Jsprit.createAlgorithm(problem);
/*
* and search a solution
*/
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
/*
* get the best
*/
VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
// new VrpXMLWriter(problem, solutions).write("output/problem-with-solution.xml");
SolutionPrinter.print(problem, bestSolution, SolutionPrinter.Print.VERBOSE);
/*
* plot
*/
// new Plotter(problem,bestSolution).setLabel(Plotter.Label.ID).plot("output/plot", "mtw");
// new GraphStreamViewer(problem, bestSolution).labelWith(Label.ID).setRenderDelay(200).display();
}
}