20 lines
888 B
Markdown
20 lines
888 B
Markdown
# boundary
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Contains administrative boundaries as linestrings (no maritime boundaries yet) as linestrings.
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Until z7 [Natural Earth data](http://www.naturalearthdata.com/downloads/10m-cultural-vectors/10m-admin-0-countries/)
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is used after which OSM boundaries ([`boundary=administrative`](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative)) are present from z8 to z14.
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OSM data contains all [`admin_level`](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#admin_level)
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but for most styles it makes sense to just style `admin_level=2` and `admin_level=4`.
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## Fields
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- **admin_level**: OSM [admin_level](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#admin_level)
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indicating the level of importance of this boundary.
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At low zoom levels the Natural Earth boundaries are mapped to the equivalent admin levels.
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## Mapping
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