routing fail with exception Itinero.Exceptions.RouteNotFoundException

[manuprendlair]

Hello All,

The router fail with this coordinates origine : 43.48291899 5.38124321 Dest : 43.51054304 5.42063052 Here my code:

public Route GetDistance(Coordinate p_PointA, Coordinate p_PointB, Profile p_profile, RouterDb routerDB)
        {
            Route route = new Route();
            RouterPoint start, end;
            const float DistanceMaxProj = 50.0F;

            // create a router.
            Router router = new Router(routerDB);

            // create a routerpoint from a location.
            // snaps the given location to the nearest routable edge.
            try
            {
                start = router.Resolve(p_profile, p_PointA, DistanceMaxProj);
            }
            catch (Exception exc)
            {
                route.TotalDistance = -1;
                route.TotalTime = -1;
                return route;
            }

            try
            {
                end = router.Resolve(p_profile, p_PointB, DistanceMaxProj);
            }
            catch (Exception exc)
            {
                route.TotalDistance = -1;
                route.TotalTime = -1;
                return route;
            }
            // calculate a route.
             route = router.Calculate(p_profile, start, end);

            return route;

I call it with Profile v_profile = Vehicle.Car.Fastest(); The routerDB was made from france-latest.osm.pbf (29/01/2019) that I found here: https://download.geofabrik.de/europe/france.html

Here my code to gerate the routerDB:

public void OsmRouterDBToDisk(string p_pathToOsmFile, string p_PathToDisk)
        {
            PrintTimeToConsole("load OSM .pbf");

            // load some routing data and build a routing network.
            RouterDb v_routerDb = new RouterDb();
            using (FileStream v_stream = new FileInfo(p_pathToOsmFile).OpenRead())
            {
                // create the network for cars only.
                v_routerDb.LoadOsmData(v_stream, VehicleOSM.Car);
            }

            //!\\ 
            // todo : verify that routerDB is not empty

            PrintTimeToConsole("Write routerDB to disk");

            // write the routerdb to disk.
            using (FileStream v_stream = new FileInfo(p_PathToDisk).Open(FileMode.Create))
            {
                v_routerDb.Serialize(v_stream);
            }
        }

So Is there something wrong in my code or is it a bug?

Emmanuel, from France.

[manuprendlair]

I just speak with Algorithm Man ;-) , and perhaps we have an idea about why it fail: The destination point is between a way and an highway, but more near the highway. So the projection on graph will be on the highway but ... the router fail because the constraint : you could take the highway only on in highway entrance !

To test this idea, I change a little the destination coordinate like the point is more near the way than the highway, and the router work fine!

So, what you think about that?

[xivk]

There is an option somewhere to allow resolving on segments that are marked as 'canstop=false' but I'm not sure anymore where. If I have time today, I'll try and search for it, feel free to ping me if I forget.

You can also search the code and try to figure it out. It's probably somewhere in the Router class itself.

[manuprendlair]

I try a search in the code for canstop. I found some references in some .lua files, one of them is: ...\src\Itinero\Osm\Vehicles\car.lua

As I am newbies on Itinero, could you explain the relation between the problem I got and canstop ?

[xivk]

I assumed you want to resolve only to location where a vehicle is allowed to stop but you are correct, this issue is not related. I think this route should work.

What version of Itinero do you have installed when testing this?