The place layer consists out of continents, countries, states and cities.
Fields
id
ID of the place name. When available, the ID is Wikidata ID, then GeoNames, or generic.
name
The name of the unit.
capital
The capital field marks the place is a capital of.
Possible values:
2
4
class
Distinguish between continents, countries, states and places like settlements or smaller entities. Use class to separately style the different places and build a text hierarchy according to their importance.
Possible values:
continent
country
state
province
city
iso_a2
Two-letter country code ISO alpha-2.
rank
Countries, states and the most important cities all have a rank to boost their importance on the map.
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