-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am 17.07.2010 21:19, schrieb Apollinaris Schoell: > > On 17 Jul 2010, at 11:36 , Marcus Wolschon wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >> >> Am 17.07.2010 19:20, schrieb Apollinaris Schoell: >>> >>> In this example it seems just too easy for a good router to do >>> the right thing without hard facts. >> >> >> How? Please post the algorithm you are thinking about. >> > > typical intersection like this one requires 2 turns > > 70-110 degree from main road to ramp and 5-20 degree from ramp to > trunk > > the cloudmade route choose 80degree + 160 degree turn when it was > possible with nearly exact same length to do 110 degree + 5 degree > I think something like a exponential cost increase for the angle > of a turn will result in 90% of the unclear situations
- From what I saw the links where oneway-streets. Else it would already have chosen the correct one because it´s simply the shortest path. > > > > I haven't done any of this or looked into the code. Mark explained > a bit in some postings in the mkgmap dev list. just to be clear. > this is not for the routing itself just for the announcements. > Don't announce if the angle is small and roads continue with > similar tags. the routing itself is done by the Garmin device What do you mean with "announcement"? > > you are so lucky! in US there is lot of imported data of > questionable quality. But even with plain tiger data routing is > possible. there is a program for that. but I have never tested how > good it is. so it is possible to fix things on the router side We have lots of mappers but WAY too few developers. Why not invest what little time we have into steadily improving the editors, so people can simply fix broken and incomplete data. Why invent complex heuristics that will take month to debug and tune when it´s not really complex to create a filter to find this kind of bug and present the user with a suggested fix and the choice to tag that this is actually correct. Marcus -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxCBJAACgkQf1hPnk3Z0cTLOwCeJLH+ytyp+ksx9Pz5bvoOCLgP 5TcAoN4WPjo23i8J1zuzjO5yFsrLdXZd =exDR -----END PGP SIGNATURE----- _______________________________________________ Routing mailing list [email protected] http://lists.openstreetmap.org/listinfo/routing
