[Tagging] noaddress=yes and (possibly) implicit buildings

Alan Mackie aamackie at gmail.com
Sun Jan 17 21:49:56 UTC 2021

On Sun, 17 Jan 2021 at 15:22, Stefan Tauner <stefan.tauner at gmx.at> wrote:

> On Sun, 17 Jan 2021 11:57:06 -0800
> Joseph Eisenberg <joseph.eisenberg at gmail.com> wrote:
> > We should map what is visible in the real world. If the official database
> > is wrong, then it needs to be changed, or the number on the house needs
> to
> > be changed, but we map what exists, not what should be.
> This will be my last e-mail in this thread because this is getting
> ridiculous since nobody shows the slightest sign of understanding.
I do not *think *it is we who are misunderstanding normal OSM practice

> If the house owner does not replace the number on the house but
> everybody including himself is using the new address (and the old one
> possibly even being deemed invalid by some services) then this new
> number *is* the correct house number no matter what the old color or
> plaque on the wall is telling you. Of course this is not the norm - I
> was never pretending that! - but it is a fact that this happens and that
> mapping what's on the wall is wrong in these cases period. This might
> be hard to verify on the ground for the casual alien mapper but that's
> not different to arm-chair mappers that misinterpret aerials.
> If the official list must be followed that strictly then no one should be
using OSM for addresses in that area anyway and it doesn't matter that OSM
typically records what's actually there.

A person told to go to house XX will generally travel down the street until
they see that number, and so the number shown should be what is recorded.
If a satnav said "you are at the correct number" and the building said
different, most people I know would not presume that the building is
incorrect and resolutely camp out by the entrance, they would look for the
building with the number they want and knock on that door instead.

Alternate tags have been suggested to also record official versions where
different and by continuing the analogy to OSM name tagging this could be
extended to loc_addr etc as well. There is precedent for this in other
areas. For example, OSM building tags match the purpose the building
appears to have been built for rather than its current use, but additional
tags to describe current use are also welcomed.

> --
> Kind regards/Mit freundlichen Grüßen, Stefan Tauner
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