[Tagging] Fwd: Door to door routing to buildings with multiple occupants

Friedrich Volkmann bsd at volki.at
Wed Dec 5 17:25:17 GMT 2012

On 05.12.2012 01:19, Tobias Knerr wrote:
>> Really no need for relations here.
> It may not be strictly necessary, but it is still an option to consider.
> Representing addresses as a relation lets you express:
> * ... multiple objects that have the same address

That address can be tagged on the surrounding polygon (building or parcel). 
I've never come across disjunct areas with the same address, and another 
address in between. Even in that case, a multipolygon would suffice. No need 
for a dedicated address relation.

> * ... objects that have multiple addresses
> * ... a mixture of both.
> This is not easily achieved with other representations. addr tags on
> individual objects do not allow multiple addresses.

They do, see my proposal.

> Overlapping polygons
> may work until you start thinking about features on different levels,
> but are pretty awkward as they require multiple overlapping polygons

IMO it's just the other way around. Overlapping polygons are only needed if 
there are different levels (addr:floor) involved. In that case, you may draw 
a polygon for each level, set layer=* and addr:floor=*. I don't see why this 
shouldn't be working.

Friedrich K. Volkmann       http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria

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