On 24/09/2010 11:03, AlfonZ wrote:
I think start_date (accompanied by end_date) might be what you are
looking for.
http://wiki.openstreetmap.org/wiki/Key:start_date
http://wiki.openstreetmap.org/wiki/Key:end_date
Unfortunately, as noted on the end_date page, "This is ... a highly
unsupported and untested tag."
Searching the mailing lists for those tags and e.g. "fourth dimension"
will find lots of discussions (e.g. "fourth dimension"
site:lists.openstreetmap.org/pipermail).
Going back to the other question though, and when users "saw" stuff is
mostly there in node and way history. For example,
http://www.openstreetmap.org/browse/way/43968101/history shows that
someone saw that a road was there in November 2009 and somebody else saw
that it had a speed limit in September 2010. Obviously this assumes
that people add features to the map as soon as they see them, but it's
better than nothing.
Cheers,
Andy
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