[Imports] Belgium address import

Jo winfixit at gmail.com
Mon Nov 25 08:16:40 UTC 2013

The reason why we never considered adding addresses as nodes on the streets
is that it wouldn't be clear on which side of the street the address was
lying. So several years ago, we put addresses on nodes, Just like POIs.

Then aerial imagery improved and we became able to draw buildings from it
(Thanks Bing).

What to do when one building has more than one address has never been
resolved completely.

I'd prefer to have a way to tie addresses to buildings by either having
them on the contour or with a site relation, instead of as a node inside
the building contour. Spatial queries are expensive and not available to
everyone on every platform.

I'd also like to have a way to form a full address without the need for a
spatial query, hence my preference to use associatedStreet relations, so
the name of the city and the postcode don't have to be repeated ad nauseum.

In the import for the Flanders part of Belgium, the plan is to only include
addr:housenumber and addr:street on the node, if I understood correctly. AS
relations are deemed to complicated to work with.


2013/11/25 Serge Wroclawski <emacsen at gmail.com>

> On Sun, Nov 24, 2013 at 3:22 PM, Randal Hale
> <rjhale at northrivergeographic.com> wrote:
> > I agree having a map of an area is a good thing if provided an address.
> It
> > just seems like there's been too much worry over tying it to a building
> or a
> > front door. I would (this is just me) want to tie it to the street - that
> > way if the street changes there's some process of having that address
> node
> > change.
> How would we represent this in OSM? A node on a street with
> addr:streetnumber?
> That might work some places, but it's far from ideal.
> First, it's not going to be as universal as you might want, and we
> already have a proliferation of address schemes in OSM. I can think of
> five schemes already, and thatr's without consulting the wiki. A new
> one would really have to add something that we don't have in any of
> the existing schemes.
> You make a point about street names being significant, at least in the
> US, but...
> Presumably, you want this for reasons of routing, ie "The closest
> entrance is the one on the street"- but where I live it doesn't hold
> true for a lot of addresses. It's very common to find an address on
> one street but the entrance is on another.
> Or you might have multiple locations with the same address. My
> building has 6 separate entrances, all with the same address.
> - Serge
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