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[mkgmap-dev] Bad routing on eTrex and MapSource

From Gerd Petermann gpetermann_muenchen at hotmail.com on Mon Jul 13 08:59:58 BST 2020

Hi Ticker,

reg no-arcs-first.patch: It only has an effect when you use --x-no-force-end-nodes-routing-nodes and I am not sure yet about its effects.
I have to do more testing of the special case reported by Felix. I've not yet understood how to avoid the special case which crashes NodCheck.
A single node without arcs will still produce this crash.

Gerd


________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Montag, 13. Juli 2020 09:51
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Bad routing on eTrex and MapSource

Hi Gerd

That's a shame, thanks for all the investigating. This is normally only
a problem at the start & end of journeys.

Is "no-arcs-first.patch" going to become part of trunk?

Ticker

On Mon, 2020-07-13 at 05:43 +0000, Gerd Petermann wrote:
> Hi Ticker,
>
> I think we have to live with this problem. I found the same error
> with original Garmin demo maps, e.g. "Topo Deutschland" from 2010
> tile 16608746.img. MapSource calculates a big detour, Basecamp
> doesn't.
> Inverted route is short in both programs:
> 1.      Rheinstraße     0 m                     0:00:00
>  N53.01308 E8.77969
> 2.      Get on Rheinstraße and drive north      0 m     0 m
>  0:00:00 0:00:00 180° grid       N53.01308 E8.77969
> 3.      Turn right onto Neckarstraße    13 m    13 m    0:00:01
> 0:00:01 17° grid        N53.01317 E8.77973
> 4.      Turn right onto Ahrstraße       32 m    19 m    0:00:08
> 0:00:09 99° grid        N53.01315 E8.78001
> 5.      Ahrstraße       44 m    12 m    0:00:13 0:00:22 180° grid
>    N53.01306 E8.78005
>
> I did not find a route restriction or oneway road which would explain
> this.
>
> Gerd

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