0b1511d60d
Use `update_water.sql` for all queries that update db to be consistent with the other layers.
42 lines
1.7 KiB
YAML
42 lines
1.7 KiB
YAML
layer:
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id: "water"
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description: |
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Water polygons representing oceans and lakes. Covered watered areas are excluded (`covered=yes`).
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On low zoom levels all water originates from Natural Earth. To get a more correct display of the south pole you should also
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style the covering ice shelves over the water.
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On higher zoom levels water polygons from [OpenStreetMapData](http://osmdata.openstreetmap.de/) are used.
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The polygons are split into many smaller polygons to improve rendering performance.
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This however can lead to less rendering options in clients since these boundaries show up. So you might not be
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able to use border styling for ocean water features.
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fields:
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class:
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description: |
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All water polygons from [OpenStreetMapData](http://osmdata.openstreetmap.de/) have the class `ocean`.
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Water bodies are classified as `lake` or `river` for water bodies with the [`waterway`](http://wiki.openstreetmap.org/wiki/Key:waterway) tag.
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values:
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lake:
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waterway: ['', 'lake']
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dock:
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waterway: 'dock'
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river:
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ocean:
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intermittent:
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description: |
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Mark with `1` if it is an [intermittent](http://wiki.openstreetmap.org/wiki/Key:intermittent) water polygon.
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values: [0, 1]
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brunnel:
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description: |
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Identifies the type of crossing as either a bridge or a tunnel.
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values:
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- bridge
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- tunnel
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buffer_size: 4
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datasource:
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query: (SELECT geometry, class, intermittent, brunnel FROM layer_water(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./update_water.sql
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- ./water.sql
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datasources:
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- type: imposm3
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mapping_file: ./mapping.yaml
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