/*******************************************************************************
* 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.io.VehicleRoutingAlgorithms;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.VehicleRoutingProblem.FleetSize;
import jsprit.core.problem.cost.VehicleRoutingTransportCosts;
import jsprit.core.problem.job.Service;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleType;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.Solutions;
import jsprit.core.util.VehicleRoutingTransportCostsMatrix;
import jsprit.util.Examples;
import java.util.Collection;
/**
* Illustrates how you can use jsprit with an already compiled distance and time matrix.
*
* @author schroeder
*
*/
public class CostMatrixExample {
public static void main(String[] args) {
/*
* some preparation - create output folder
*/
Examples.createOutputFolder();
VehicleType type = VehicleTypeImpl.Builder.newInstance("type").addCapacityDimension(0, 2).setCostPerDistance(1).setCostPerTime(2).build();
VehicleImpl vehicle = VehicleImpl.Builder.newInstance("vehicle").setStartLocationId("0").setType(type).build();
Service s1 = Service.Builder.newInstance("1").addSizeDimension(0, 1).setLocationId("1").build();
Service s2 = Service.Builder.newInstance("2").addSizeDimension(0, 1).setLocationId("2").build();
Service s3 = Service.Builder.newInstance("3").addSizeDimension(0, 1).setLocationId("3").build();
/*
* Assume the following symmetric distance-matrix
* from,to,distance
* 0,1,10.0
* 0,2,20.0
* 0,3,5.0
* 1,2,4.0
* 1,3,1.0
* 2,3,2.0
*
* and this time-matrix
* 0,1,5.0
* 0,2,10.0
* 0,3,2.5
* 1,2,2.0
* 1,3,0.5
* 2,3,1.0
*/
//define a matrix-builder building a symmetric matrix
VehicleRoutingTransportCostsMatrix.Builder costMatrixBuilder = VehicleRoutingTransportCostsMatrix.Builder.newInstance(true);
costMatrixBuilder.addTransportDistance("0", "1", 10.0);
costMatrixBuilder.addTransportDistance("0", "2", 20.0);
costMatrixBuilder.addTransportDistance("0", "3", 5.0);
costMatrixBuilder.addTransportDistance("1", "2", 4.0);
costMatrixBuilder.addTransportDistance("1", "3", 1.0);
costMatrixBuilder.addTransportDistance("2", "3", 2.0);
costMatrixBuilder.addTransportTime("0", "1", 10.0);
costMatrixBuilder.addTransportTime("0", "2", 20.0);
costMatrixBuilder.addTransportTime("0", "3", 5.0);
costMatrixBuilder.addTransportTime("1", "2", 4.0);
costMatrixBuilder.addTransportTime("1", "3", 1.0);
costMatrixBuilder.addTransportTime("2", "3", 2.0);
VehicleRoutingTransportCosts costMatrix = costMatrixBuilder.build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().setFleetSize(FleetSize.INFINITE).setRoutingCost(costMatrix)
.addVehicle(vehicle).addJob(s1).addJob(s2).addJob(s3).build();
VehicleRoutingAlgorithm vra = VehicleRoutingAlgorithms.readAndCreateAlgorithm(vrp, "input/fastAlgo.xml");
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
SolutionPrinter.print(Solutions.bestOf(solutions));
new Plotter(vrp, Solutions.bestOf(solutions)).plot("output/yo.png", "po");
}
}