Hi all, I've now tried routing on my Oregon. I created two different gmapsupp.img with different family-id for Luxembourg and Saarland and routing doesn't seem to work in this case. :-( It works fine when I combine the overlapping tiles into one map (single gmapsupp) Is anybody able to calculate routes between different (Garmin) maps on a device? If not I wonder if this feature is really useful. What would be the use case? Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Gerd Petermann <gpetermann_muenchen@hotmail.com> Gesendet: Sonntag, 22. Juli 2018 10:05 An: Development list for mkgmap Betreff: Re: [mkgmap-dev] routing between different maps Hi Andrzej, I think the code in the branch (r4211) works quite well now, performance is okay and the number of added external nodes looks reasonable. next on my TODO list: 1) Find good option name and document it. Current code always uses admin_level=2 boundaries. If one splits each German Bundesland and user tries to install e.g. Niedersachsen and Schleswig-Holstein this will not help. So, as you proposed, we might want an option that works like this: --add-ext-nodes-at-borders=x The value x specifies the admin_level. This option tells mkgmap to add so called external routing nodes (NOD3 and NOD4) where roads intersect with boundaries of the given admin_level. Use this if ... 2) Unit tests for the code that checks for intersections Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Mittwoch, 18. Juli 2018 12:54 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] routing between different maps Hi Gerd,
I am not yet sure what to do with roads that share multiple nodes with country borders.
I guess, some optimization would be beneficial. This is probably a case, where road goes along a border. If there is a series of consecutive external nodes, you could leave only first, last and nodes which are junctions. This probably should be done at later stages of compilation. Or maybe first and last would be enough? I mean, at a junction there should be an external node added for the second road. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev