[mkgmap-dev] splitter: relations to be checked with keep-complete=true

Mon Dec 17 08:36:40 GMT 2012

Attached is a patch for r263 that tries to implement WanMils proposals. 

Gerd

> Date: Sun, 16 Dec 2012 22:07:17 +0100
> From: wmgcnfg at web.de
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] splitter: relations to be checked with	keep-complete=true
> 
> >>> A relation with route=ferry should be handled, because there are some
> >>> (many ?) ferry-routes are tagged as such a relation and member are empty
> >>> ways.
> >> Can you give an example of such a route and how you work with it in
> >> mkgmap? Why must all parts of the relation be complete in a tile?
> > This example has no empty way, but only a waterway=seaway and two
> > route=ferry-relation
> >
> > http://www.openstreetmap.org/browse/way/124862398
> >
> > I'm using in relations-file:
> > type=route & route=ferry { apply { set route=ferry ; set
> > rrk_name='$(rrk_name),${name}' | '${name}' } }
> >
> > and in lines:
> > route=ferry & name=* { set mkgmap:ferry=yes } [0x1b road_class=3
> > road_speed=2 resolution 16]
> > route=ferry & name!=* { set mkgmap:ferry=yes ; set name='${rrk_name}' }
> > [0x1b road_class=3 road_speed=2 resolution 16]
> >
> 
> You are copying tags from the relation to ways and the ways are 
> converted as lines. That gives the need of complete ways but it doesn't 
> matter if the relation is incomplete and some members not intersecting 
> the tile bounding box are missing.
> 
> So I can add a third rule to make it more clear:
> * subrelations: can be ignored by splitter
> * relations: only relations with type multipolygon, restriction and 
> through_route must be complete. boundary relations are ignored.
> * member of relations: An element (way or a node) is part of a tile and 
> the element belongs to a relation. This relation must also be put in the 
> tile but the relation itself needn't be complete which means one or more 
> members can be missing.
> 
> Agree?
> 
> WanMil
> 
> 
> > There is one problem unsolved:
> >
> > If way is tagged with a name and rrk_name is different (e.g. second
> > ferry or two relations etc.), then name is taken only from the way.
> >
> > Henning
> 
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://lists.mkgmap.org.uk/mailman/listinfo/mkgmap-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20121217/db4e6f24/attachment.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: limit_relation_types.patch
Type: application/octet-stream
Size: 1766 bytes
Desc: not available
Url : http://lists.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20121217/db4e6f24/attachment.obj 