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Merge scalerank into osm for high zoom levels

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lukasmartinelli
2016-10-28 13:07:42 +02:00
parent 38dcc030b0
commit 0df15c613e
3 changed files with 13 additions and 7 deletions
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6
layers/place/city.sql
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@@ -1,14 +1,14 @@
CREATE OR REPLACE FUNCTION layer_city(bbox geometry, zoom_level int, pixel_width numeric)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, place text, scalerank int) AS $$
SELECT osm_id, geometry, name, name_en, place, scalerank
FROM osm_important_place_point
FROM osm_place_point
WHERE geometry && bbox
AND ((zoom_level = 2 AND scalerank = 0)
OR (zoom_level BETWEEN 3 AND 7 AND scalerank < zoom_level)
)
UNION ALL
SELECT osm_id, geometry, name, name_en, place, NULL AS scalerank FROM (
SELECT osm_id, geometry, name, name_en, place,
SELECT osm_id, geometry, name, name_en, place, scalerank FROM (
SELECT osm_id, geometry, name, name_en, place, scalerank,
row_number() OVER (
PARTITION BY LabelGrid(geometry, 150 * pixel_width)
ORDER BY place::place_subclass ASC NULLS LAST,