52 lines
2.1 KiB
YAML
52 lines
2.1 KiB
YAML
layer:
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id: "boundary"
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description: |
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Contains administrative boundaries as linestrings.
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Until z4 [Natural Earth data](http://www.naturalearthdata.com/downloads/) is used after which
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OSM boundaries ([`boundary=administrative`](http://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative))
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are present from z5 to z14 (also for maritime boundaries with `admin_level <= 2` at z4).
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OSM data contains several [`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: |
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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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The `admin_level` corresponds to the lowest `admin_level`
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the line participates in.
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At low zoom levels the Natural Earth boundaries are mapped to the equivalent admin levels.
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disputed:
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description: |
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Mark with `1` if the border is disputed.
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values: [0, 1]
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disputed_view:
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description: |
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Field containing name of the disputed area (extracted from border relation in OSM, without spaces) and ISO2 code of country, which wants to see the boundary line.
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For country boundaries only (`admin_level = 2`).
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Value examples from Asian OSM pbf extract
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values:
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- AbuMusaIsland_AE
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- BaraHotiiValleys_CN
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- ChineseClaim_CN
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- Crimea_RU
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- Crimea_UA
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- Demchok_CN
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- Dokdo_JP
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- IndianClaim-North_IN
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- IndianClaimwesternKashmir_IN
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- PakistaniClaim_PK
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- SamduValleys_CN
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- TirpaniValleys_CN
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maritime:
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description: |
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Mark with `1` if it is a maritime border.
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values: [0, 1]
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buffer_size: 4
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datasource:
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geometry_field: geometry
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query: (SELECT geometry, admin_level, disputed, disputed_view, maritime FROM layer_boundary(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./boundary.sql
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datasources:
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- type: imposm3
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mapping_file: ./mapping.yaml
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