after the answer of user "Poutnik", we have another proof that the OSMAnd and BRoute use slow (bad) technology.
Software like Here WeGO, Sygic, Tomtom Go, iGO, navigon, navitel, route 66, copilot, mireo, etc , are far away from this low level apps (OSMAnd and BRout). And all of this top companies has offline navigation apps. So, the user "Episteme PROMENEUR" has right into his first post. My opinion is - don't use osmand, locus, orux, brouter, for city navigation. They are only for mountain use. On Sunday, March 22, 2020 at 9:23:18 AM UTC+2, Poutnik wrote: > > Time needed to calculate the route grows in average quadratically with > distance , for both OSMAnd and BRouter. Brouter may use more resource > serving algorithm and data. > > Online routing services use very different algorithms. > > OSMAnd and BRouter use modifications of A-star algorithm, which is slow > on end device, but resource friendly for creation navigation data. > > Online car routers usually contraction hierarchy or similar algorithm, > that is fast for end device, but is extremely demanding for preprocessing > of the server navigation data. > > > > Dne 22. března 2020 7:54:19 Lodro Gyamtso <[email protected] > <javascript:>> napsal: > >> from my experience with navigation, i have some information to share with >> you >> >> - brouter says ... for every 1Km of travel distance, the time is 1sec to >> design the route >> - the osm maps is one open community and the users "draw" the maps into >> computers >> - maps from big companies like google or Here or tomtom, etc, has special >> cars to collect data from the field >> >> the results are ... >> when the big cartographic companies collect data, they include info like >> traffic data for 24/7 of time (365days per year). Those data is also >> embedded into offline maps. The route algorithm use this info and during >> the calculation rejects probably over the 95% of roads. So, the design time >> into one trip will be very fast, 2-3 secs. >> >> On Thursday, March 5, 2020 at 3:02:23 PM UTC+2, Episteme PROMENEUR wrote: >>> >>> Osmand routing calculation is very slow for long distance for many years. >>> >>> If you use for other app then no problem for example "waze" >>> >>> What is the problem ? No expert in Osmand team ? Not enough devs ? >>> Something else ? >>> >>> If you use other app then no problem for example "waze" >>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "OsmAnd" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/osmand/4856016d-04c8-4515-938d-5b4358145e03%40googlegroups.com >> >> <https://groups.google.com/d/msgid/osmand/4856016d-04c8-4515-938d-5b4358145e03%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > -- You received this message because you are subscribed to the Google Groups "OsmAnd" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/osmand/726a6a04-bedf-40dd-b1ec-ef384563f713%40googlegroups.com.
