[OSM-talk] Long Ways and API 0.6 - multirelations

marcus.wolschon at googlemail.com marcus.wolschon at googlemail.com
Mon Feb 9 09:54:01 GMT 2009


On Mon, 09 Feb 2009 08:54:52 +0100, Frederik Ramm <frederik at remote.org>
wrote:
> I don't think Dave was thinking of anything more than two different 
> relations (partly) using the same ways. That would not warrant any 
> special kind of relation.
> 
> For situations in which you want relations contained in relations - e.g. 
> in a situation where a nationwide cycle route comprises 5.000 ways and 
> thus cannot be expressed in one single relation -, what I suggest is 
> creating a number of "sub relations" that are members of a "super 
> relation" with the same tags as the "sub relation". (The super relation 
> might have a different "name" tag from the sub relations, in case you 
> want to name your sub-relations "blah cycleway, southern section" or so).
> 
> The "sub relations" will not receive any extra tags saying that they are 
> sub relations.

Some hint that a super-relation exists would be helpfull here.
Else it will happen that the sub-relation AND the super-relation
are processed (in my case: rendered if they are tagged as "type=street").
I could of cause internally add such a hint automatically with a tag
in a special namespace that is removed before exporting/uploading
that part of the map again (so it never ends up in the main-map or
an editor).

Marcus





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