On Fri, Feb 15, 2019 at 11:03:01AM +0100, Stephan Bösch-Plepelits wrote: > Hi! > > I have some thoughts in the start_date tag, as I find it a bit too vague - > meaning start of what? > > Example: There is this museum, which openened in 2011, but the building is > much older, it was built in 1725: > https://www.openstreetmap.org/relation/1937535 > > An option would be to prefix start_date with the key of the indicating tag, > e.g. amenity:start_date would describe the start_date of the current > amenity. So, non-prefixed start_date would apply to all other tags.
exactly. > This seems to be quite popular anyway, but I don't know if this ever has > been agreed upon - at least it's not documented as such: > https://taginfo.openstreetmap.org/search?q=start_date > > For the museum, which I mentioned before, I used the following tags: > - start_date=2011 > - building:start_date=1725 another variant has been documented: https://wiki.openstreetmap.org/wiki/Proposed_features/Date_namespace > > Other remarks: > > It would also be interesting to be able to tag the start of construction - > often construction starts many years before the building is finshed: > Airport BER in Berlin, Germany or La Sagrada Familia in Barcelona, Spain > are famous examples. How to tag this? Maybe: construction:start_date? > > Any thougths on this? you could map what was there at any particular time but I think it is better to provide the link to wikipedia. Ordinary users will ever look at OSM data close enough to find out this details. Richard _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
