[OSM-newbies] Is there any tag for say "seeing in"?

[Eric Jarvies]

I agree.  I have often thought one of the things OSM is really missing is a TIMELINE feature, wherein users can slide the timeline to any point in time, and see how the map looked at that point in time.  This of course would require the type of tagging you mention below, as to not to be confused with when the content was entered into OSM, but rather, when the actual park or building was started(to be built), and was finished(being built), for example.

Eric Jarvies

On Sep 24, 2010, at 2:36 AM, Xan wrote:

> Hi,
> 
> Is there any tag for say "I saw this thing in this date"? I think it's useful for knowing when things are change. I explain: we have tag data for tagging the date of construction or date when the things are finished.
> 
> But suppose we have a park. One user tags all of its parts (in 2010-09-24). It's perfect and there is no missing thing. One month after, in this park, the Administration adds a playground. Another user adds this playground (in 2010-11-24). Could these users see "I-see-in=2010-09-24" and "I-see-in=2010-11-24"?
> 
> This is different from a user tagging this park uncompletely in 2010-09-24 and another user completes the tag in 2010-09-25. Because the "version" of the park in this case is the same.
> 
> So, "I-see-in" could provide information about if the things change or there are new elements.
> 
> Regards,
> Xan.
> 
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