Hi Felix,

thanks for testing. Yes, roundabouts have to be split as well as all other 
closed or self intersecting ways.
I guess the img format does not allow closed arcs.


Von: mkgmap-dev <mkgmap-dev-boun...@lists.mkgmap.org.uk> im Auftrag von Felix 
Hartmann <extremecar...@gmail.com>
Gesendet: Sonntag, 11. März 2018 15:13:06
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Bug in Road Merging - actually doubling roads.

Hi Gerd,
oh - I had a different layout in gpsmapedit with 0x13 set to invisible and not 
used to opening gpsmapedit from my laptop. So the map was actually correct:

is now fine - though of course the visible rendering is not really representing 
how it looks in reality - but broken routing is fixed.

as you said is still spiking - and actually with my style in that case also 
wrongly ending up in 6 routable lines. For me really a simple remove all semi 
connected ways at minimum length filter would be fine. I would just remove 
clutter of micromapping.

As for the roundabouts.
1. https://www.openstreetmap.org/way/208976154
looks fine - just strange that way https://www.openstreetmap.org/way/447282006 
is not merged - all the others are merged.

2. https://www.openstreetmap.org/way/312642720
a bit strange that it gets split into 2 ways. Routing seems fine. (the NNE 
section of the roundabout between the exit and entry is separated)

3. https://www.openstreetmap.org/way/148634420
actually looks much better then with older versions of mkgmap. Looks pretty 
round - with a 3 month old mkgmap version (sorry don't have unpatched to 
compare) it was not very round. Routing is fine.
Although here the north section is split off into a seperate way- it this a 
need for roundabouts?


On 10 March 2018 at 18:36, Gerd Petermann 
<gpetermann_muenc...@hotmail.com<mailto:gpetermann_muenc...@hotmail.com>> wrote:
Hi Felix,

please double check. The patch should not have such an effect, at least not
in general.
Maybe you changed the routing options?


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