[mkgmap-dev] patch for crash in MapSource

Thu Feb 8 12:16:45 GMT 2018

Hi all,

the patch contained a stupid bug, but there is more to this:
1) the effect of the patch depends on the dem-dists value (I assume only the one
that gives the highest resolution). The higher the resolution the better it works.
2) it probably also depends on the boundaries (areas.list)

I assume now that the tile boundary from areas.list should be a certain multiples of degrees,
probably different multiples for lat and lon and that the overlap simply makes
sure that this boundary is within the overlapped area.
Maybe the preferred multiples also depend on the dem-dist.

I'll try to find out more ...

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von osm at pinns <osm at pinns.co.uk>
Gesendet: Donnerstag, 8. Februar 2018 10:33
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] patch for crash in MapSource

Hi Gerd

I think you are right ,ie

start and finishing point  at same level seems OK eventhough the route
turns south 20miles then up again

r

Nick

On 08/02/2018 09:27, Gerd Petermann wrote:
> Hi all,
>
> okay, thanks for testing. I'll try to find a better patch.
> Please check: I think the patch works fine for routes which cross tile borders in horizontal direction
> direction but I still see problems with vertical crossing. Can you confirm that?
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Henning Scholland <osm at hscholland.de>
> Gesendet: Donnerstag, 8. Februar 2018 09:59
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] patch for crash in MapSource
>
> Same for me, but just did quick test. Will try on the weekend more detailed
> Henning
> On 8 Feb 2018, at 16:57, lig fietser <ligfietser at hotmail.com<mailto:ligfietser at hotmail.com>> wrote:
>
> Hi Gerd,
>
> I tested your patch but I still see frequent crashes near tile borders.
>
>
> ________________________________
> Van: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> namens Gerd Petermann <GPetermann_muenchen at hotmail.com>
> Verzonden: woensdag 7 februari 2018 02:45:27
> Aan: mkgmap-dev at lists.mkgmap.org.uk
> Onderwerp: [mkgmap-dev] patch for crash in MapSource
>
> Hi all,
>
> attached is a patch that seems to help in many cases where --dem-poly causes crashes in MapSource "Show Profile..."
> A binary is here:
> http://files.mkgmap.org.uk/download/414/mkgmap.jar
>
> It changes the TRE file and the *.tdb file.
> I still see a few crashes but maybe those are caused by other problems.
>
> Please try and let me know your results. I found no bad impact so far,
> long distance routing still seems to work, but I've not tested much.
>
> @Steve: Maybe we have to make sure that the areas in *.tdb do not overlap.
> In this case this patch is not yet okay.
>
> Gerd
>
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