[mkgmap-dev] patch: improve RoadMerger: allow to merge roads with reversed points

Mon May 10 14:22:35 BST 2021

reg. route=ferry relations:
I fear this will be a bit more complex. Mappers seem to put all kind of things in those relations: piers, rivers, highways, you name it.
Test file is here:
https://files.mkgmap.org.uk/download/506/ferry_relations.osm.pbf

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Gerd Petermann <gpetermann_muenchen at hotmail.com>
Gesendet: Montag, 10. Mai 2021 12:23
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] patch: improve RoadMerger: allow to merge roads with reversed points

Hi Ticker,

yes, I meant: Create a new way for the combination of ways that make up one ferry route in a relation but never merge them in RoadMerger.
Haven't looked at the details yet. There were some special cases in British Columbia with this.

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, 10. Mai 2021 12:16
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] patch: improve RoadMerger: allow to merge roads with reversed points

Hi

Is it a particular problem to never merge ferry lines? If derived from
a relation, what elements is the relation using? Probably these
shouldn't be merged either.

Ticker

On Mon, 2021-05-10 at 09:57 +0000, Gerd Petermann wrote:
> Hi all,
>
> found another problem: In what situation should RoadMerger merge
> ferry routes?
> See e.g. https://www.openstreetmap.org/node/1302656090
>
> I first thought that they should never be merged but we also have
> cases where ferry lines are mapped with relations.
>
> Maybe we need special code to handle route=ferry relations to combine
> ways and then forbid to merge in RoadMerger?
>
> Gerd

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