31 lines
1.0 KiB
YAML
31 lines
1.0 KiB
YAML
layer:
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id: "waterway"
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description: |
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OpenStreetMap [waterways](http://wiki.openstreetmap.org/wiki/Waterways) for higher zoom levels
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and Natural Earth rivers and lake centerlines for low zoom levels.
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Linestrings without a name or which are too short are filtered
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out at low zoom levels. Waterways do no not have a `subclass` field.
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buffer_size: 4
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fields:
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name: |
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The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the waterway.
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The `name` field may be empty for NaturalEarth data or at lower zoom levels.
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class:
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description: |
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The original value of the [`waterway`](http://wiki.openstreetmap.org/wiki/Key:waterway) tag.
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values:
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- stream
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- river
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- canal
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- drain
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- ditch
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datasource:
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geometry_field: geometry
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query: (SELECT geometry, name, class FROM layer_waterway(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./merge_waterway.sql
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- ./waterway.sql
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datasources:
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- type: imposm3
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mapping_file: ./mapping.yaml
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