I think there's too much redundancy in using is_in:continent. it is useless, for example, to say that a street + the municipality + the region + the country is all in the same continent. it is enough to tag the largest polygon with is_in:continent and erase those that provide the same information redundantly on objects included in that polygon. this would limit the number of is_in:continent to one per country or a few per country for countries with very scattered territories (e.g. overseas territories for France)
The other solution is to a merge of all polygons having the same is_in:continent value to make a (multi)poylgon, possibly simplified, for each continent. this is neither more nor less verifiable than the information currently in the database. but it would strongly allow to simply use it (e.g.: how many power plants informed in osm in africa?) Le 07. 08. 18 à 11:43, Javier Sánchez Portero a écrit : > Maybe I'm extending the fork, but only a mention to consider. While > there are only 8 uses of place=continent, there are 179996 (whow!) uses > of is_in:continent=* that will be orphaned in that case. > > https://taginfo.openstreetmap.org/keys/is_in:continent > > El mar., 7 ago. 2018 a las 10:15, Eugene Alvin Villar (<sea...@gmail.com > <mailto:sea...@gmail.com>>) escribió: > > > > On Tuesday, August 7, 2018, Javier Sánchez Portero > <javiers...@gmail.com <mailto:javiers...@gmail.com>> wrote: > > The same applies to other place nodes like oceans, seas, natural > bays, straits, etc. > > At the risk of forking this discussion to another topic, I'd like to > point out that at least for oceans and major seas, bays, and > straits, the International Hydrographic Organization has defined > them as specific delimited areas. > > For continents, nobody could even agree whether to treat North and > South America as separate continents or as just one continent named > the Americas. Not to mention whether to call the smallest continent > as Australia, Australasia, or Oceania. (And let's not forget the > geological debate about Zealandia.) On a more general note, are we > talking about continent as a geopolitical entity (Europe vs. Asia), > or as a geological entity (Eurasia)? > > I am in favor of removing these continent nodes. They are "simple" > and few enough that people who make maps and apps can decide how to > treat them themselves. _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org <mailto:Tagging@openstreetmap.org> > https://lists.openstreetmap.org/listinfo/tagging > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging