public void Setup()
{
this.DataDirPath = Path.GetFullPath(Path.Combine(Directory.GetCurrentDirectory(), "../../../../../../../../../", "data"));
var spatial = new GeographySpatialOperation();
var roads = this.ReadRoads(spatial);
var mapBuilder = new RoadMapBuilder(spatial);
_roadMap = mapBuilder.AddRoads(roads).Build();
{
var naiveDijkstraRouter = new DijkstraRouter <Road, RoadPoint>();
_naiveDijkstraMatcher = new Matcher <MatcherCandidate, MatcherTransition, MatcherSample>(
_roadMap, naiveDijkstraRouter, Costs.TimePriorityCost, spatial);
_naiveDijkstraMatcher.MaxDistance = MaxDistance; // set maximum searching distance between two GPS points to 1000 meters.
_naiveDijkstraMatcher.MaxRadius = MaxGpsRadius; // sets maximum radius for candidate selection to 200 meters
}
{
var precomputedDijkstraRouter = new PrecomputedDijkstraRouter <Road, RoadPoint>(_roadMap, Costs.TimePriorityCost, Costs.DistanceCost, MaxDistance);
_precomputedDijkstraMatcher = new Matcher <MatcherCandidate, MatcherTransition, MatcherSample>(
_roadMap, precomputedDijkstraRouter, Costs.TimePriorityCost, spatial);
_precomputedDijkstraMatcher.MaxDistance = MaxDistance; // set maximum searching distance between two GPS points to 1000 meters.
_precomputedDijkstraMatcher.MaxRadius = MaxGpsRadius; // sets maximum radius for candidate selection to 200 meters
}
_samples = ReadSamples().OrderBy(s => s.Time).ToArray();
}
static void Main(string[] args)
{
var spatial = new GeographySpatialOperation();
var mapBuilder = new RoadMapBuilder(spatial);
Console.WriteLine("Loading road map...");
var roads = ReadRoads(spatial);
var map = mapBuilder.AddRoads(roads).Build();
Console.WriteLine("The road map has been loaded");
var matcher = new Matcher(map, new DijkstraRouter <Road, RoadPoint>(), Costs.TimePriorityCost, spatial);
matcher.MaxDistance = 1000; // set maximum searching distance between two GPS points to 1000 meters.
matcher.MaxRadius = 200.0; // sets maximum radius for candidate selection to 200 meters
var kstate = new MatcherKState();
Console.WriteLine("Loading GPS samples...");
var samples = ReadSamples().OrderBy(s => s.Time).ToArray();
Console.WriteLine("GPS samples loaded. [count={0}]", samples.Length);
//Do the offline map-matching
Console.WriteLine("Doing map-matching...");
var startedOn = DateTime.Now;
foreach (var sample in samples)
{
var vector = matcher.Execute(kstate.Vector(), kstate.Sample, sample);
kstate.Update(vector, sample);
}
Console.WriteLine("Fetching map-matching results...");
var candidatesSequence = kstate.Sequence();
var timeElapsed = DateTime.Now - startedOn;
Console.WriteLine("Map-matching elapsed time: {0}, Speed={1} samples/second", timeElapsed, samples.Length / timeElapsed.TotalSeconds);
Console.WriteLine("Results: [count={0}]", candidatesSequence.Count());
foreach (var cand in candidatesSequence)
{
var roadId = cand.Point.Edge.RoadInfo.Id; // original road id
var heading = cand.Point.Edge.Headeing; // heading
var coord = cand.Point.Coordinate; // GPS position (on the road)
if (cand.HasTransition)
{
var geom = cand.Transition.Route.ToGeometry(); // path geometry from last matching candidate
Console.WriteLine("RoadID={0}\t\tFraction={1}", roadId, cand.Point.Fraction);
}
}
Console.WriteLine("All done!");
Console.ReadKey();
}
/// <summary>
/// 开始纠偏
/// </summary>
/// <returns></returns>
public async Task <List <Trajectory> > LoadDataAndTransfer()
{
var spatial = new GeographySpatialOperation();
var mapBuilder = new RoadMapBuilder(spatial);
LoggerHelper.Logger.Info("Loading road map...");
Debug.WriteLine("Loading road map...");
var roads = ReadRoads(spatial);
var map = mapBuilder.AddRoads(roads).Build();
LoggerHelper.Logger.Info("The road map has been loaded");
Debug.WriteLine("The road map has been loaded");
//var router = new PrecomputedDijkstraRouter<Road, RoadPoint>(map, Costs.TimePriorityCost, Costs.DistanceCost, 1000D);
var router = new DijkstraRouter <Road, RoadPoint>();
var matcher = new Matcher <MatcherCandidate, MatcherTransition, MatcherSample>(
map, router, Costs.TimePriorityCost, spatial);
matcher.MaxDistance = 20; // set maximum searching distance between two GPS points to 1000 meters.
matcher.MaxRadius = 15; // sets maximum radius for candidate selection to 200 meters
//matcher.MaxDistance = 1000; // set maximum searching distance between two GPS points to 1000 meters.
//matcher.MaxRadius = 200; // sets maximum radius for candidate selection to 200 meters
Debug.WriteLine("Loading GPS samples...");
//var samples = ReadSamples().OrderBy(s => s.Time).ToList();
var samples = ReadSamples(_trajectories).OrderBy(s => s.Time).ToList();
LoggerHelper.Logger.Info("GPS samples loaded. [count={0}]", samples.Count);
Debug.WriteLine("GPS samples loaded. [count={0}]", samples.Count);
Debug.WriteLine("Starting Offline map-matching...");
var res = await OfflineMatch(matcher, samples);
return(res);
}
static void Main(string[] args)
{
var spatial = new GeographySpatialOperation();
var mapBuilder = new RoadMapBuilder(spatial);
Console.WriteLine("Loading road map...");
var roads = ReadRoads(spatial);
var map = mapBuilder.AddRoads(roads).Build();
Console.WriteLine("The road map has been loaded");
//var router = new PrecomputedDijkstraRouter<Road, RoadPoint>(map, Costs.TimePriorityCost, Costs.DistanceCost, 1000D);
var router = new DijkstraRouter <Road, RoadPoint>();
var matcher = new Matcher <MatcherCandidate, MatcherTransition, MatcherSample>(
map, router, Costs.TimePriorityCost, spatial);
matcher.MaxDistance = 1000; // set maximum searching distance between two GPS points to 1000 meters.
matcher.MaxRadius = 200.0; // sets maximum radius for candidate selection to 200 meters
Console.WriteLine("Loading GPS samples...");
var samples = ReadSamples().OrderBy(s => s.Time).ToList();
Console.WriteLine("GPS samples loaded. [count={0}]", samples.Count);
Console.WriteLine("Starting Offline map-matching...");
OfflineMatch(matcher, samples);
Console.WriteLine("Starting Online map-matching...");
//Uncomment below line to see how online-matching works
//OnlineMatch(matcher, samples);
Console.WriteLine("All done!");
Console.ReadKey();
}