kopia lustrzana https://github.com/openmaptiles/openmaptiles
Add park layer
rodzic
327bdc7313
commit
09dddebac4
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CREATE OR REPLACE FUNCTION park_class(landuse TEXT, leisure TEXT, boundary TEXT) RETURNS TEXT AS $$
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SELECT CASE
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WHEN leisure = 'nature_reserve' OR boundary='national_park' THEN 'national_park'
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WHEN landuse IN ('recreation_ground', 'village_green') or leisure = 'park' THEN 'public_park'
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ELSE NULL
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END;
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$$ LANGUAGE SQL IMMUTABLE;
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-- etldoc: layer_park[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_park |<z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14_" ] ;
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CREATE OR REPLACE FUNCTION layer_park(bbox geometry, zoom_level int)
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RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text) AS $$
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SELECT osm_id, geometry,
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park_class(landuse, leisure, boundary) AS class,
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COALESCE(NULLIF(landuse, ''), NULLIF(leisure, ''), NULLIF(boundary, '')) AS subclass
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FROM (
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-- etldoc: osm_park_polygon_gen6 -> layer_park:z8
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen6
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WHERE zoom_level = 8
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UNION ALL
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-- etldoc: osm_park_polygon_gen5 -> layer_park:z9
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen5
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WHERE zoom_level = 9
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UNION ALL
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-- etldoc: osm_park_polygon_gen4 -> layer_park:z10
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen4
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WHERE zoom_level = 10
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UNION ALL
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-- etldoc: osm_park_polygon_gen3 -> layer_park:z11
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen3
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WHERE zoom_level = 11
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UNION ALL
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-- etldoc: osm_park_polygon_gen2 -> layer_park:z12
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen2
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WHERE zoom_level = 12
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UNION ALL
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-- etldoc: osm_park_polygon_gen1 -> layer_park:z13
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon_gen1
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WHERE zoom_level = 13
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UNION ALL
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-- etldoc: osm_park_polygon -> layer_park:z14
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SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
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FROM osm_park_polygon
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WHERE zoom_level >= 14
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) AS zoom_levels
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WHERE geometry && bbox;
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$$ LANGUAGE SQL IMMUTABLE;
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generalized_tables:
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# etldoc: imposm3 -> osm_park_polygon_gen6
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park_polygon_gen6:
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source: park_polygon_gen5
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sql_filter: area>15000000
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tolerance: 300.0
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# etldoc: imposm3 -> osm_park_polygon_gen5
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park_polygon_gen5:
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source: park_polygon_gen4
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sql_filter: area>4200000
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tolerance: 200.0
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# etldoc: imposm3 -> osm_park_polygon_gen4
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park_polygon_gen4:
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source: park_polygon_gen3
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sql_filter: area>1200000
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tolerance: 120.0
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# etldoc: imposm3 -> osm_park_polygon_gen3
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park_polygon_gen3:
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source: park_polygon_gen2
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sql_filter: area>480000
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tolerance: 80.0
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# etldoc: imposm3 -> osm_park_polygon_gen2
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park_polygon_gen2:
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source: park_polygon_gen1
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sql_filter: area>240000
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tolerance: 50.0
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# etldoc: imposm3 -> osm_park_polygon_gen1
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park_polygon_gen1:
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source: park_polygon
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sql_filter: area>60000
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tolerance: 20.0
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tables:
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# etldoc: imposm3 -> osm_park_polygon
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park_polygon:
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type: polygon
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fields:
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- name: osm_id
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type: id
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- name: geometry
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type: validated_geometry
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- name: landuse
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key: landuse
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type: string
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- name: leisure
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key: leisure
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type: string
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- name: boundary
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key: boundary
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type: string
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- name: area
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type: pseudoarea
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mapping:
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landuse:
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- park
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- village_green
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- recreation_ground
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leisure:
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- nature_reserve
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- park
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boundary:
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- national_park
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layer:
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id: "park"
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description: |
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Landuse is used to describe use of land by humans.At lower zoom levels this is
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from Natural Earth data for residential (urban) areas and at higher zoom levels mostly OSM `landuse` tags.
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buffer_size: 4
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fields:
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class: |
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More generalized groups of either `park`, `school`, `hospital`, `railway`,
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`cemetery`, `military`, `residential`. Use this to assign general for landuse.
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subclass: |
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Original value of either the `amenity`, `landuse`, `leisure` or `boundary` tag.
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Use this to do more precise styling.
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datasource:
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geometry_field: geometry
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query: (SELECT geometry, class, subclass FROM layer_park(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./class.sql
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- ./layer.sql
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datasources:
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- type: imposm3
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mapping_file: ./mapping.yaml
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@ -12,6 +12,7 @@ tileset:
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- layers/water/water.yaml
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- layers/water/water.yaml
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- layers/waterway/waterway.yaml
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- layers/waterway/waterway.yaml
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- layers/landcover/landcover.yaml
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- layers/landcover/landcover.yaml
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- layers/park/park.yaml
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- layers/landuse/landuse.yaml
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- layers/landuse/landuse.yaml
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name: OpenMapTiles v1.0
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name: OpenMapTiles v1.0
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description: "A tileset showcasing all layers in OpenMapTiles. http://openmaptiles.org"
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description: "A tileset showcasing all layers in OpenMapTiles. http://openmaptiles.org"
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