Hi Ticker, reg. routing problems in Basecamp: Maybe you hit the problem described for --max-routing-island-len?
Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkg...@jagit.co.uk> Gesendet: Dienstag, 15. Februar 2022 17:41 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] option link-pois-to-ways information Hi Gerd highway=street_lamp was just an example of a POI that can get linked to a WAY that can be ignored. There are others that are valid OSM tagging that are irrelevant to the highway behaviour. Actually, regardless of --link-pois-to-ways, there is a problem in the scenario where there is typical road system linked to a small road system by just a road with mkgmap:throughroute=no and a footway. BaseCamp and the eTrex 30x really will route over the footway to get into the small road system. MapSource and, I think, the eTrex HCx will use the road. I realise that this set-up seems unlikely, but can happen if there is an inconsistency in the tagging of roads in the small system that results in one not having mkgmap:throughroute=no that is joined to the footway. My example happened in a business park. My style makes this problem more likely to happen, while also trying to fix it, by not setting mkgmap:throughroute=no unless there seems to be a good reason for it. Good reasons are when there is a barrier on a service road. This is the test I want to improve. Ticker On Tue, 2022-02-15 at 14:12 +0000, Gerd Petermann wrote: > Hi Ticker, > > if you find highway=street_lamp nodes on highway=* ways those are > errors and should be fixed in OSM. > Street lamps are normally mapped along the road, not on the road. > > Maybe you meant highway=traffic_signals? > > Besides that Basecamp should never route a car over a footway. That > sounds like an error in the map data produced by mkgmap > or maybe you used wrong routing settings. Please let me know how to > reproduce. > > No idea if your proposed change would improve routing, but feel free > to experiment with that. > > Gerd > > ________________________________________ > Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag > von Ticker Berkin <rwb-mkg...@jagit.co.uk> > Gesendet: Dienstag, 15. Februar 2022 13:37 > An: mkgmap development > Betreff: [mkgmap-dev] option link-pois-to-ways information > > Hi all > > To improve routing, I'd like to get information about the POIS that > are > being linked to a WAY that can be used as part of the style/lines > processing. > > The problem I'm trying to solve is to restrict car routing through > some > types of very low level roads (eg service) when there is a barrier. > Setting mkgmap:throughroute=no on these works nicely with MapSource > and > older devices but BaseCamp and newer devices will happily route over > a > footpath to avoid a throughroute=no section. > > At the moment, with --link-pois-to-ways, if the POI has a barrier or > highway tag, mkgmap:way-has-pois is set true. This can be tested by > lines, inc/access etc, but there is no way to find out if it is a > significant barrier or something like highway=street_lamp. > > points processing can set mkgmap: access & road_speed/class variables > that are handled by inbuild code after lines processing to imposes > more > restrictions on the way and/or reduces speed/class; this is no use > for > what I want to do. > > Possibilities are: > 1/ have options to say which POI tag/value combinations cause > link-pois-to-ways > 2/ set new variables on the way, eg mkgmap:barrier_tags/highway_tags, > which are a list of distinct POI highway/barrier tag values. > > Ticker > > > > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
