[Tagging] place nodes for continents?

marc marc marc_marc_irc at hotmail.com
Tue Aug 7 13:43:25 UTC 2018

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 (<seav80 at gmail.com 
> <mailto:seav80 at gmail.com>>) escribió:
>     On Tuesday, August 7, 2018, Javier Sánchez Portero
>     <javiersanp at gmail.com <mailto:javiersanp at 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. _______________________________________________
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