[Tagging] Photo links in OSM

[Bryce Nesbitt]

On Wed, Jun 12, 2013 at 12:38 AM, Zecke <zeck at saeuferleber.de> wrote:

>  image:ancient=<url>              ancient image of the object
> image:<date>=<url>              dated image, where date format undergoes
> the rules described e.g. here: http://wiki.openstreetmap.org/<http://wiki.openstreetmap.org/wiki/Key:start_date>
>

While there is considerable interest in historical data attached to OSM
objects, the image tag is not the place to innovate.
The same desires exist for building outlines, roads, etc.

See:
http://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts
http://wiki.openstreetmap.org/wiki/Open_Historical_Map
http://openhistorymap.net/
http://www.slideshare.net/frankieroberto/mapp-history-on-open-street-map

OSM's core purpose is for things that are observable now.  Things one can't
observe are problematic in OSM.

Abandoned objects however are fine:
http://wiki.openstreetmap.org/wiki/Key:abandoned
They should be mapped as they are now, and can leave some traces as to what
they were.
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