[mkgmap-dev] Routing does not work since December.From Marko Mäkelä marko.makela at iki.fi on Mon Aug 9 21:46:27 BST 2010
On Mon, Aug 09, 2010 at 09:45:33PM +0200, Valentijn Sessink wrote: >Since r1431 (2009-12-10) bike routing has, IMHO and for my situation, >degraded. When I'm building biking maps for the Amsterdam region, I'm >using a style file from r1430. Relying on bicycles for most of my transportation needs, I take this seriously. Let me try to reason what is causing the breakage. r1431 changed the minimum resolution of a few items. I believe that it has been established that the resolution will not affect routing, as the routing will take place at resolution 24. It also changed the road_class or road_speed of the following: junction=roundabout: road_speed=2 or 1 instead of 5,4,3,2 road_class unchanged highway=motorway: road_speed=7 instead of road_speed=6 highway=motorway_link: road_speed=2 instead of road_speed=3 road_class=3 instead of road_class=4 highway=trunk: add bicycle=no, foot=no (these were not added previously) road_class=4 instead of road_class=3 highway=trunk_link: add bicycle=no, foot=no (these were not added previously) road_class=3 or 4 instead of road_class=3 road_speed=2 instead of road_speed=3 highway=* & motorroad=yes: add bicycle=no, foot=no (these were not added previously) highway=primary_link, secondary_link, tertiary_link: road_speed=1 instead of 2 or 3 highway=minor: road_speed=3 instead of 2 highway=unclassified: road_speed=3 instead of 2 road_class=0 instead of 1 highway=living_street: road_speed=1 instead of 2 highway=service: road_speed=2 instead of 1 highway=path: road_speed=1 instead of 0 highway=road: road_class=0 instead of 1 road_speed=1 instead of 2 >Please note that this is for the Netherlands (which has many, many >roads and and abundance of bicycle paths on OSM) and for bike routing, >which has it's peculiarities on it's own. I seem to remember that someone (Felix?) mentioned that Garmin bicycle routing knows two values of road_speed: zero and nonzero. Before r1431, highway=path and highway=cycleway got different road_speed: 0 and 1, respectively. Starting with r1431, both have road_speed=1. Could that be the source of the breakage? If it is (please test road_speed=0 on highway=path in the current default style), then I would change the default style so that highway=path & bicycle=(designated|official) gets road_speed=1 and all other highway=path get road_speed=0. Best regards, Marko
- Previous message: [mkgmap-dev] Routing does not work since December.
- Next message: [mkgmap-dev] Routing does not work since December.
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
More information about the mkgmap-dev mailing list