kopia lustrzana https://github.com/openmaptiles/openmaptiles
				
				
				
			Add a subclass column from the mapping_value to clean the landcover layer.
							rodzic
							
								
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						commit
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			@ -9,82 +9,80 @@
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--);
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--CREATE INDEX IF NOT EXISTS landcover_grouped_gen2_geometry_idx ON landcover_grouped_gen2 USING gist(geometry);
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CREATE OR REPLACE FUNCTION landcover_class(landuse VARCHAR, "natural" VARCHAR, leisure VARCHAR, wetland VARCHAR) RETURNS TEXT AS $$
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CREATE OR REPLACE FUNCTION landcover_class(subclass VARCHAR) RETURNS TEXT AS $$
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    SELECT CASE
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        WHEN landuse IN ('farmland', 'farm', 'orchard', 'vineyard', 'plant_nursery') THEN 'farmland'
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        WHEN "natural" IN ('glacier', 'ice_shelf') THEN 'ice'
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        WHEN "natural"='wood' OR landuse IN ('forest') THEN 'wood'
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        WHEN "natural" IN ('bare_rock', 'scree') THEN 'rock'
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        WHEN "natural"='grassland'
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            OR landuse IN ('grass', 'meadow', 'allotments', 'grassland',
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                'park', 'village_green', 'recreation_ground')
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            OR leisure IN ('park', 'garden')
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            THEN 'grass'
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        WHEN "natural"='wetland' OR wetland IN ('bog', 'swamp', 'wet_meadow', 'marsh', 'reedbed', 'saltern', 'tidalflat', 'saltmarsh', 'mangrove') THEN 'wetland'
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        WHEN "natural"IN ('beach', 'sand') THEN 'sand'
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        WHEN subclass IN ('farmland', 'farm', 'orchard', 'vineyard', 'plant_nursery') THEN 'farmland'
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        WHEN subclass IN ('glacier', 'ice_shelf') THEN 'ice'
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        WHEN subclass IN ('wood', 'forest') THEN 'wood'
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        WHEN subclass IN ('bare_rock', 'scree') THEN 'rock'
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        WHEN subclass IN ('grassland', 'grass', 'meadow', 'allotments', 'grassland',
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                          'park', 'village_green', 'recreation_ground', 'park', 'garden') THEN 'grass'
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        WHEN subclass IN ('wetland', 'bog', 'swamp', 'wet_meadow', 'marsh', 'reedbed',
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                          'saltern', 'tidalflat', 'saltmarsh', 'mangrove') THEN 'wetland'
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        WHEN subclass IN ('beach', 'sand') THEN 'sand'
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        ELSE NULL
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    END;
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$$ LANGUAGE SQL IMMUTABLE;
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-- etldoc: ne_110m_glaciated_areas ->  landcover_z0
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CREATE OR REPLACE VIEW landcover_z0 AS (
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    SELECT NULL::bigint AS osm_id, geometry, NULL::text AS landuse, 'glacier'::text AS "natural", NULL::text AS leisure, NULL::text AS wetland FROM ne_110m_glaciated_areas
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    SELECT NULL::bigint AS osm_id, geometry, 'glacier'::text AS subclass FROM ne_110m_glaciated_areas
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);
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CREATE OR REPLACE VIEW landcover_z2 AS (
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    -- etldoc: ne_50m_glaciated_areas ->  landcover_z2
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    SELECT NULL::bigint AS osm_id, geometry, NULL::text AS landuse, 'glacier'::text AS "natural", NULL::text AS leisure, NULL::text AS wetland FROM ne_50m_glaciated_areas
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    SELECT NULL::bigint AS osm_id, geometry, 'glacier'::text AS subclass FROM ne_50m_glaciated_areas
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    UNION ALL
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    -- etldoc: ne_50m_antarctic_ice_shelves_polys ->  landcover_z2
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    SELECT NULL::bigint AS osm_id, geometry, NULL::text AS landuse, 'ice_shelf'::text AS "natural", NULL::text AS leisure, NULL::text AS wetland FROM ne_50m_antarctic_ice_shelves_polys
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    SELECT NULL::bigint AS osm_id, geometry, 'ice_shelf'::text AS subclass FROM ne_50m_antarctic_ice_shelves_polys
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);
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CREATE OR REPLACE VIEW landcover_z5 AS (
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    -- etldoc: ne_10m_glaciated_areas ->  landcover_z5
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    SELECT NULL::bigint AS osm_id, geometry, NULL::text AS landuse, 'glacier'::text AS "natural", NULL::text AS leisure, NULL::text AS wetland FROM ne_10m_glaciated_areas
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    SELECT NULL::bigint AS osm_id, geometry, 'glacier'::text AS subclass FROM ne_10m_glaciated_areas
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    UNION ALL
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    -- etldoc: ne_10m_antarctic_ice_shelves_polys ->  landcover_z5
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    SELECT NULL::bigint AS osm_id, geometry, NULL::text AS landuse, 'ice_shelf'::text AS "natural", NULL::text AS leisure, NULL::text AS wetland FROM ne_10m_antarctic_ice_shelves_polys
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    SELECT NULL::bigint AS osm_id, geometry, 'ice_shelf'::text AS subclass FROM ne_10m_antarctic_ice_shelves_polys
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);
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CREATE OR REPLACE VIEW landcover_z7 AS (
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    -- etldoc: osm_landcover_polygon_gen7 ->  landcover_z7
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen7
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen7
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);
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CREATE OR REPLACE VIEW landcover_z8 AS (
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    -- etldoc: osm_landcover_polygon_gen6 ->  landcover_z8
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen6
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen6
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);
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CREATE OR REPLACE VIEW landcover_z9 AS (
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    -- etldoc: osm_landcover_polygon_gen5 ->  landcover_z9
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen5
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen5
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);
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CREATE OR REPLACE VIEW landcover_z10 AS (
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    -- etldoc: osm_landcover_polygon_gen4 ->  landcover_z10
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen4
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen4
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);
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CREATE OR REPLACE VIEW landcover_z11 AS (
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    -- etldoc: osm_landcover_polygon_gen3 ->  landcover_z11
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen3
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen3
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);
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CREATE OR REPLACE VIEW landcover_z12 AS (
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    -- etldoc: osm_landcover_polygon_gen2 ->  landcover_z12
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen2
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen2
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);
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CREATE OR REPLACE VIEW landcover_z13 AS (
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    -- etldoc: osm_landcover_polygon_gen1 ->  landcover_z13
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon_gen1
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon_gen1
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);
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CREATE OR REPLACE VIEW landcover_z14 AS (
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    -- etldoc: osm_landcover_polygon ->  landcover_z14
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    SELECT osm_id, geometry, landuse, "natural", leisure, wetland FROM osm_landcover_polygon
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    SELECT osm_id, geometry, subclass FROM osm_landcover_polygon
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);
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-- etldoc: layer_landcover[shape=record fillcolor=lightpink, style="rounded, filled", label="layer_landcover | <z0_1> z0-z1 | <z2_4> z2-z4 | <z5_6> z5-z6 |<z7> z7 |<z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14+" ] ;
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			@ -92,11 +90,8 @@ CREATE OR REPLACE VIEW landcover_z14 AS (
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CREATE OR REPLACE FUNCTION layer_landcover(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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        landcover_class(landuse, "natural", leisure, wetland) AS class,
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        COALESCE(
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            NULLIF("natural", ''), NULLIF(landuse, ''),
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            NULLIF(leisure, ''), NULLIF(wetland, '')
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        ) AS subclass
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        landcover_class(subclass) AS class,
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        subclass
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        FROM (
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        -- etldoc:  landcover_z0 -> layer_landcover:z0_1
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        SELECT * FROM landcover_z0
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			@ -51,22 +51,14 @@ tables:
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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: natural
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      key: natural
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      type: string
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    - name: wetland
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      key: wetland
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      type: string
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    - name: area
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      type: area
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    - name: webmerc_area
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      type: webmerc_area
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    - name: subclass
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      type: mapping_value
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    - name: mapping_key
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      type: mapping_key
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    mapping:
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      landuse:
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      - allotments
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