[OSM-talk] zones for motorway/in town/outof town?

[Guenther Meyer]

Am Thursday 21 May 2009 schrieb Ben Laenen:
> So while it seems to be a polygon vs tags on ways discussion:
>
> I wonder what people have against using relations to combine all roads
> in one built-up area, or one maxspeed zone, or some other kind of zone.
> It's really the cleanest option and allows for additional tags like a
> name, and it allows everything to be more clearly defined, and allows
> for a method which is much more flexible and allows for extended
> properties.
>
>
> I guess these arguments will come up:
>
>
> * it's not newbie friendly
>
right ;-)

> relations are one of only three basic structures in OSM (node - way -
> relation), can we please assume that someone mapping with OSM can grasp
> three concepts? He already should be able to deal with them now anyway.
>
they are, but at least for me relations really add some kind of complexity.
yes, some things aren't possible with the other structures, but using 
relations as an answer for everything is not a good way...

> * relations will become huge in some cities
>
> some relations are already huge, just look out for some cross
> continental E roads, or some long walking or cycling routes.
>
you have to get the whole relation, just to check, if some streets are part of 
it. size does matter here...
with the tag-on-street approach you only need the street, nothing more.



-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 197 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.openstreetmap.org/pipermail/talk/attachments/20090521/777b4fd5/attachment.pgp>