public void Test1TwoPoints()
{
// build test case.
var router = new RouterMock();
var locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(1, 1)
};
var matrixAlgorithm = new WeightMatrixAlgorithm <float>(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(),
new Itinero.Algorithms.Search.MassResolvingAlgorithm(router, new Itinero.Profiles.Profile[] { Vehicle.Car.Fastest() }, locations, null));
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(0, matrixAlgorithm.Errors.Count);
var matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(Coordinate.DistanceEstimateInMeter(locations[0], locations[1]), matrix[0][1], 0.1);
Assert.AreEqual(Coordinate.DistanceEstimateInMeter(locations[1], locations[0]), matrix[1][0], 0.1);
Assert.AreEqual(0, matrix[1][1]);
Assert.AreEqual(2, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.CorrectedIndexOf(0));
Assert.AreEqual(1, matrixAlgorithm.CorrectedIndexOf(1));
}
public void Test3TwoPoints()
{
// build test case.
var invalidSet = new HashSet <int>();
invalidSet.Add(1);
var router = new RouterMock(invalidSet);
var locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(1, 1)
};
var matrixAlgorithm = new WeightMatrixAlgorithm <float>(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(),
new Itinero.Algorithms.Search.MassResolvingAlgorithm(router, new Itinero.Profiles.Profile[] { Vehicle.Car.Fastest() }, locations, null));
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(1, matrixAlgorithm.Errors.Count);
Assert.IsTrue(matrixAlgorithm.Errors.ContainsKey(1));
var matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(1, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.CorrectedIndexOf(0));
Assert.AreEqual(0, matrixAlgorithm.OriginalIndexOf(0));
// build test case.
invalidSet.Clear();
invalidSet.Add(0);
router = new RouterMock(invalidSet);
locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(1, 1)
};
matrixAlgorithm = new WeightMatrixAlgorithm <float>(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(),
new Itinero.Algorithms.Search.MassResolvingAlgorithm(router, new Itinero.Profiles.Profile[] { Vehicle.Car.Fastest() }, locations, null));
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(1, matrixAlgorithm.Errors.Count);
Assert.IsTrue(matrixAlgorithm.Errors.ContainsKey(0));
matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(1, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.CorrectedIndexOf(1));
Assert.AreEqual(1, matrixAlgorithm.OriginalIndexOf(0));
}
public void Test1TwoPointsWithMatching()
{
// build test case.
var router = new RouterMock(new AttributeCollection(new Attribute("highway", "residential")));
var locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(1, 1)
};
var matrixAlgorithm = new WeightMatrixAlgorithm(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(), locations,
(edge, i) =>
{
return(true);
});
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(0, matrixAlgorithm.Errors.Count);
var matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(Coordinate.DistanceEstimateInMeter(locations[0], locations[1]), matrix[0][1], 0.1);
Assert.AreEqual(Coordinate.DistanceEstimateInMeter(locations[1], locations[0]), matrix[1][0], 0.1);
Assert.AreEqual(0, matrix[1][1]);
Assert.AreEqual(2, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.IndexOf(0));
Assert.AreEqual(1, matrixAlgorithm.IndexOf(1));
// build test case.
router = new RouterMock(new AttributeCollection(new Attribute("highway", "primary")));
locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(1, 1)
};
matrixAlgorithm = new WeightMatrixAlgorithm(router, Vehicle.Car.Fastest(), locations,
(edge, i) =>
{
return(false);
});
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(2, matrixAlgorithm.Errors.Count);
Assert.AreEqual(LocationErrorCode.NotResolved, matrixAlgorithm.Errors[0].Code);
Assert.AreEqual(LocationErrorCode.NotResolved, matrixAlgorithm.Errors[1].Code);
}
public void Test2TwoPoints()
{
// build test case.
var router = new RouterMock();
var locations = new Coordinate[] {
new Coordinate(0, 0),
new Coordinate(180, 1)
};
var matrixAlgorithm = new WeightMatrixAlgorithm(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(), locations, null);
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(1, matrixAlgorithm.Errors.Count);
Assert.IsTrue(matrixAlgorithm.Errors.ContainsKey(1));
var matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(1, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.IndexOf(0));
Assert.AreEqual(0, matrixAlgorithm.LocationIndexOf(0));
// build test case.
locations = new Coordinate[] {
new Coordinate(180, 0),
new Coordinate(1, 1)
};
matrixAlgorithm = new WeightMatrixAlgorithm(router, Vehicle.Car.Fastest(), new DefaultWeightHandlerMock(), locations, null);
// run.
matrixAlgorithm.Run();
Assert.IsNotNull(matrixAlgorithm);
Assert.IsTrue(matrixAlgorithm.HasRun);
Assert.IsTrue(matrixAlgorithm.HasSucceeded);
Assert.AreEqual(1, matrixAlgorithm.Errors.Count);
Assert.IsTrue(matrixAlgorithm.Errors.ContainsKey(0));
matrix = matrixAlgorithm.Weights;
Assert.IsNotNull(matrix);
Assert.AreEqual(0, matrix[0][0]);
Assert.AreEqual(1, matrixAlgorithm.RouterPoints.Count);
Assert.AreEqual(0, matrixAlgorithm.IndexOf(1));
Assert.AreEqual(1, matrixAlgorithm.LocationIndexOf(0));
}
public static void Main(string[] args)
{
Download.ToFile("http://files.itinero.tech/data/itinero/routerdbs/planet/europe/belgium.c.cf.routerdb", "belgium.c.cf.routerdb").Wait();
var routerDb = RouterDb.Deserialize(File.OpenRead("belgium.c.cf.routerdb"));
var router = new Router(routerDb);
var locations = new List <Coordinate>(new Coordinate[]
{
new Coordinate(51.270453873703080f, 4.8008108139038080f),
new Coordinate(51.264197451065370f, 4.8017120361328125f),
new Coordinate(51.267446600889850f, 4.7830009460449220f),
new Coordinate(51.260733228426076f, 4.7796106338500980f),
new Coordinate(51.256489871317920f, 4.7884941101074220f),
new Coordinate(51.270964016530680f, 4.7894811630249020f)
});
// METHOD1: quick and easy for high-quality data already on the road network.
// calculate drive time in seconds between all given locations.
var resolved = router.Resolve(Vehicle.Car.Fastest(), locations.ToArray(), 150);
var invalidPoints = new HashSet <int>();
var matrix = router.CalculateWeight(Vehicle.Car.Fastest(), resolved, invalidPoints);
// METHOD2: most datasets contain large numbers of unconfirmed locations that may be too far from the road network or contain errors.
// this method can handle coordinates sets that contains errors.
// let's add a location that's in the middle of nowhere.
var invalidLocation = new Coordinate(51.275689280878694f, 4.7779369354248040f);
locations.Insert(3, invalidLocation);
// for advanced applications there is a helper class
var matrixCalculator = new WeightMatrixAlgorithm(router, Vehicle.Car.Fastest(), locations.ToArray());
matrixCalculator.Run();
// there is some usefull output data here now.
var weights = matrixCalculator.Weights; // the weights, in this case seconds travel time.
var errors = matrixCalculator.Errors; // some locations could be unreachable, this contains details about those locations.
resolved = matrixCalculator.RouterPoints.ToArray(); // the resolved routerpoints, you can use these later without the need to resolve again.
// when there are failed points, the weight matrix is smaller, use these functions to map locations from the original array to succeeded points.
var newIndex = matrixCalculator.MassResolver.ResolvedIndexOf(4); // returns the index of the original location in the weight matrix.
var oldIndex = matrixCalculator.MassResolver.LocationIndexOf(5); // returns the index of the weight matrix point in the original locations array.
}
/// <summary>
/// Calculates a route along the given locations.
/// </summary>
public Result <Route> Calculate(Profile profile, Coordinate[] locations, AttributeCollection[] attributes, bool?closed,
Dictionary <string, object> parameters)
{
// create matrix calculator.
var matrixCalculator = new WeightMatrixAlgorithm(
_router, profile, locations, (edge, i) =>
{
if (attributes.Length > 0)
{
var edgeTags = _router.Db.GetProfileAndMeta(
edge.Data.Profile, edge.Data.MetaId);
var locationTags = attributes[i];
string locationName;
string edgeName;
if (edgeTags.TryGetValue("name", out edgeName) &&
locationTags.TryGetValue("name", out locationName))
{
if (!string.IsNullOrWhiteSpace(edgeName) &&
!string.IsNullOrWhiteSpace(locationName))
{
if (edgeName.LevenshteinMatch(locationName, 90))
{
return(true);
}
}
}
return(false);
}
return(true);
});
matrixCalculator.SearchDistanceInMeter = 200;
matrixCalculator.Run();
// check success.
if (!matrixCalculator.HasSucceeded)
{ // weight matrix calculation failed.
return(new Result <Route>("Calculating weight matrix failed."));
}
// verify minimum results.
if (matrixCalculator.RouterPoints.Count < 1 ||
matrixCalculator.Errors.ContainsKey(0))
{
return(new Result <Route>("Calculating weight matrix failed."));
}
// create TSP router.
int?last = locations.Length - 1;
if (closed.HasValue && closed.Value)
{ // problem is closed.
last = 0;
}
else if (closed.HasValue && !closed.Value)
{ // problem is open.
last = null;
}
var tspRouter = new TSPRouter(_router, profile, locations, 0, last,
new EAXSolver(new Itinero.Logistics.Solvers.GA.GASettings()
{
CrossOverPercentage = 10,
ElitismPercentage = 2,
PopulationSize = 300,
MaxGenerations = 100000,
MutationPercentage = 0,
StagnationCount = 100
}), matrixCalculator);
tspRouter.Run();
// check success.
if (!tspRouter.HasSucceeded)
{ // weight matrix calculation failed.
return(new Result <Route>("Calculating final route failed."));
}
return(new Result <Route>(tspRouter.BuildRoute()));
}