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Add park layer

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Lukas Martinelli
2016-11-28 19:16:27 +00:00
parent 327bdc7313
commit 09dddebac4
5 changed files with 145 additions and 0 deletions
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layers/park/layer.sql Normal file
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-- etldoc: layer_park[shape=record fillcolor=lightpink, style="rounded,filled",
-- etldoc: label="layer_park |<z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14_" ] ;
CREATE OR REPLACE FUNCTION layer_park(bbox geometry, zoom_level int)
RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text) AS $$
SELECT osm_id, geometry,
park_class(landuse, leisure, boundary) AS class,
COALESCE(NULLIF(landuse, ''), NULLIF(leisure, ''), NULLIF(boundary, '')) AS subclass
FROM (
-- etldoc: osm_park_polygon_gen6 -> layer_park:z8
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen6
WHERE zoom_level = 8
UNION ALL
-- etldoc: osm_park_polygon_gen5 -> layer_park:z9
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen5
WHERE zoom_level = 9
UNION ALL
-- etldoc: osm_park_polygon_gen4 -> layer_park:z10
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen4
WHERE zoom_level = 10
UNION ALL
-- etldoc: osm_park_polygon_gen3 -> layer_park:z11
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen3
WHERE zoom_level = 11
UNION ALL
-- etldoc: osm_park_polygon_gen2 -> layer_park:z12
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen2
WHERE zoom_level = 12
UNION ALL
-- etldoc: osm_park_polygon_gen1 -> layer_park:z13
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon_gen1
WHERE zoom_level = 13
UNION ALL
-- etldoc: osm_park_polygon -> layer_park:z14
SELECT osm_id, geometry, landuse, leisure, boundary, NULL::int as scalerank
FROM osm_park_polygon
WHERE zoom_level >= 14
) AS zoom_levels
WHERE geometry && bbox;
$$ LANGUAGE SQL IMMUTABLE;