e29827d76c
This PR adds indigenous lands to the `boundary` layer by adding new area features for these objects, along with generalization up to z4. It borrows heavily from the technical processing chain of the `park` layer. I added new `class`, `name`, and `name:xx` attributes to the boundary layer, in order to support the new area features. Should we (or someone extending this schema) come up with new objects to place in the boundary layer in the future, `class` would support additional categories.
73 lines
3.0 KiB
YAML
73 lines
3.0 KiB
YAML
layer:
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id: "boundary"
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requires:
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tables:
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- osm_border_linestring
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- ne_10m_admin_0_countries
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- ne_10m_admin_0_boundary_lines_land
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- ne_10m_admin_1_states_provinces_lines
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- ne_50m_admin_0_boundary_lines_land
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- ne_110m_admin_0_boundary_lines_land
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description: |
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Contains administrative boundaries as linestrings and aboriginal lands as polygons.
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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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class:
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description: |
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Use the **class** to differentiate between different kinds of boundaries. The class for `boundary=aboriginal_lands` is `aboriginal_lands`.
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name: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value (area features only).
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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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adm0_l: |
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State name on the left of the border. For country boundaries only (`admin_level = 2`).
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adm0_r: |
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State name on the right of the border. For country boundaries only (`admin_level = 2`).
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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_name:
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description: |
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Field containing name of the disputed area (extracted from border relation in OSM, without spaces).
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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
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- BaraHotiiValleys
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- ChineseClaim
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- Crimea
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- Demchok
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- Dokdo
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- IndianClaim-North
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- IndianClaimwesternKashmir
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- PakistaniClaim
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- SamduValleys
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- TirpaniValleys
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claimed_by:
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description: |
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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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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, adm0_l, adm0_r, disputed, disputed_name, claimed_by, maritime, class, name, {name_languages} FROM layer_boundary(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./update_boundary_polygon.sql
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- ./boundary_name.sql
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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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