OK, I'll have a closer look at the calculated angles tomorrow. Maybe problem at point 1 is related to the type=through_route relation. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <cdavilam@orangecorreo.es> Gesendet: Donnerstag, 5. Januar 2017 21:34:40 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] Estrange detours That could explain detour at point 2, but I have tried downgrading implied roads up to tertiary with no routing change. Point 1 is a straight road, but MapSource prefers to turn right and then left instead. El 05/01/17 a las 21:13, Gerd Petermann escribió:
Hi,
my understanding so far is that the Garmin algo doesn't like a rather sharp turn on a road with highway=trunk [0x02 road_class=4 road_speed=5 resolution 18]
In Germany a trunk road is nearly like a motorway and it seems that the above rule is good for this. Maybe we should add country specific rules here?
Gerd
________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <cdavilam@orangecorreo.es> Gesendet: Donnerstag, 5. Januar 2017 21:01:57 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] Estrange detours
El 05/01/17 a las 19:05, Andrzej Popowski escribió:
Hi Carlos,
I have your example tested in BaseCamp and I don't see any problems at point 1. At point 2 weird routing appears only for track and camper. It could be due to angle at crossroad. I could get normal turn right after changing geometry of this crossroad, as in attached picture.
I think there were some changes in mkgmap dealing with angels between roads. Maybe this code should be reviewed? Hi Andrzej Your findings in BaseCamp match what I found. I guess the problem comes from the angle between crossing roads, but modifying it as in your picture would be "tagging for the render" I suspect;-). Current angle between those two streets is wider than 90º and it shouldn't be avoided for routing anyway. Attached is a picture with the correct chart
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