[mkgmap-dev] Bug in Road Merging - actually doubling roads.

Thu Feb 22 19:19:15 GMT 2018

Perfect. I guess my maps are the only one causing bsod here on devices, but
without the bug they would be fine...

On 22 Feb 2018 20:03, "Gerd Petermann" <gpetermann_muenchen at hotmail.com>
wrote:

> Hi Felix,
>
> I can reproduce the problem with a small download around the way and just
> the --route option.
> The problem seems to be in WrongAngleFixer, it says
> "... all points of way http://www.openstreetmap.org/way/130665733 are
> rounded to equal map units"
> No idea why the way is not reduced to a single point, will investigate
> further.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von
> Felix Hartmann <extremecarver at gmail.com>
> Gesendet: Donnerstag, 22. Februar 2018 19:27:44
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] Bug in Road Merging - actually doubling roads.
>
> I just noticed that mkgmap sometimes creates a lot more routable roads for
> a certain stretch than actually defined in the style-file.
>
> https://www.openstreetmap.org/way/130665733
>
> should be only once as a routable line in my map, however it ends up 6
> times!
> Once is correct, but 5 iterations are actually the way from the south (3
> times) and the way from the East (2 times). Now each of these ways should
> be created that often, however it should not overlay into this short
> stretch of way.
>
> While doubling up ways can be beneficial for routing, having a way more
> than 5 times on top of each other let's Garmin devices crash on routing
> over them. Also it leads to detours - as it will not always route straight
> from the Way from South to the Way going to the West, but follow along
> after the intersection for 4.3m until hitting up north, then reversing and
> finally going to the way in the West.
>
> I've uploaded the tile here:
> https://openmtbmap.org/gmapsupp_copied.img
>
>
> I'm pretty sure that with other style-files - the way will also be copied
> past the intersection and end up too often in the map for that 4.3m
> stretch...
>
>
> I kinda guess it is related to it being so short - that place has some
> remarkable micro-mapping detail.
> Or is this really expected?
>
>
> If needed I can try to create a reduced style to only create that problem
> - but I think the bug should be obvious.
>
>
> --
> Felix Hartman - Openmtbmap.org & VeloMap.org
> Schusterbergweg 32/8
> 6020 Innsbruck
> Austria - Österreich
> _______________________________________________
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> mkgmap-dev at lists.mkgmap.org.uk
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>
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