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

Mon May 10 15:27:43 BST 2021

Hi Ticker,

yes, we might want to combine ways which belong to route=ferry relations, see https://wiki.openstreetmap.org/wiki/Tag:route%3Dferry#How_to_map_using_a_relation

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 16:24
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] patch: improve RoadMerger: allow to merge roads with reversed points

Hi Gerd

Maybe I'm not understanding. Apart from suppressing merging when
mkgmap:ferry, does any else need to be done?

Ticker

On Mon, 2021-05-10 at 13:22 +0000, Gerd Petermann wrote:
> 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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