[OSM-talk] Id stability

[Maarten Deen]

On Mon, 1 Aug 2011 09:29:41 +0100, Ed Loach wrote:
>> I've got a wiki that links certain localities to the OSM map. I
> use the
>> addr: fields for that. They are unique (at least for my purpose),
> but
>> this also does not guarantee 100% continuity.
>
> I did a map once with links to local pubs. I found storing their
> latitude and longitude was good enough for my purpose. While pubs
> being converted from nodes to ways, or their accuracy of location
> being improved based on bing imagery means the pub may move
> slightly, the stored location was still near enough (and much better
> than calculating based on say OpenData postcode centroids as most
> web location stuff seems to do).

The big advantage for my purpose is that zipcode+housenumber is unique 
in the Netherlands. This is not so in other countries where even 
street+zipcode+housenumber may not be unique. So yes, YMMV. Doing it on 
vicinity of previous known location is also a good thought.

Regards,
Maarten