113 lines
3.8 KiB
PL/PgSQL
113 lines
3.8 KiB
PL/PgSQL
CREATE OR REPLACE VIEW place_z2 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
WHERE scalerank <= 0
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z3 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
WHERE scalerank <= 2
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z4 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
WHERE scalerank <= 5
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z5 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
WHERE scalerank <= 6
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z6 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
WHERE scalerank <= 7
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z7 AS (
|
|
SELECT geom, name, 'settlement' AS class, 'city'::place AS rank, scalerank, pop_min AS population
|
|
FROM ne_10m_populated_places
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z8 AS (
|
|
SELECT way AS geom, name, class::text, rank, NULL::integer AS scalerank, population FROM place_point
|
|
WHERE rank IN ('city', 'town')
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z10 AS (
|
|
SELECT way AS geom, name, class::text, rank, NULL::integer AS scalerank, population FROM place_point
|
|
WHERE rank IN ('city', 'town', 'village') OR class='subregion'
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z11 AS (
|
|
SELECT way AS geom, name, class::text, rank, NULL::integer AS scalerank, population FROM place_point
|
|
WHERE class IN ('subregion', 'settlement')
|
|
);
|
|
|
|
CREATE OR REPLACE VIEW place_z13 AS (
|
|
SELECT way AS geom, name, class::text, rank, NULL::integer AS scalerank, population FROM place_point
|
|
);
|
|
|
|
CREATE OR REPLACE FUNCTION layer_place(bbox geometry, zoom_level int, pixel_width numeric)
|
|
RETURNS TABLE(geom geometry, name text, class text, rank text, scalerank int) AS $$
|
|
SELECT geom, name, class, rank::text, scalerank FROM (
|
|
SELECT geom, name, class, rank, scalerank,
|
|
row_number() OVER (
|
|
PARTITION BY LabelGrid(geom, 150 * pixel_width)
|
|
ORDER BY scalerank ASC NULLS LAST,
|
|
CASE class
|
|
WHEN 'settlement' THEN 10
|
|
WHEN 'subregion' THEN 5
|
|
WHEN 'locality' THEN 2 ELSE 1
|
|
END DESC,
|
|
rank DESC,
|
|
population DESC NULLS LAST,
|
|
length(name) DESC
|
|
) AS gridrank
|
|
FROM (
|
|
SELECT * FROM place_z2
|
|
WHERE zoom_level = 2
|
|
UNION ALL
|
|
SELECT * FROM place_z3
|
|
WHERE zoom_level = 3
|
|
UNION ALL
|
|
SELECT * FROM place_z4
|
|
WHERE zoom_level = 4
|
|
UNION ALL
|
|
SELECT * FROM place_z5
|
|
WHERE zoom_level = 5
|
|
UNION ALL
|
|
SELECT * FROM place_z6
|
|
WHERE zoom_level = 6
|
|
UNION ALL
|
|
SELECT * FROM place_z7
|
|
WHERE zoom_level = 7
|
|
UNION ALL
|
|
SELECT * FROM place_z8
|
|
WHERE zoom_level BETWEEN 8 AND 9
|
|
UNION ALL
|
|
SELECT * FROM place_z10
|
|
WHERE zoom_level = 10
|
|
UNION ALL
|
|
SELECT * FROM place_z11
|
|
WHERE zoom_level BETWEEN 11 AND 12
|
|
UNION ALL
|
|
SELECT * FROM place_z13
|
|
WHERE zoom_level >= 13
|
|
) AS zoom_levels
|
|
WHERE geom && bbox
|
|
) AS ranked_places
|
|
WHERE
|
|
zoom_level <= 7 OR
|
|
(zoom_level = 8 AND gridrank <= 4) OR
|
|
(zoom_level = 9 AND gridrank <= 9) OR
|
|
(zoom_level = 10 AND gridrank <= 9) OR
|
|
(zoom_level = 11 AND gridrank <= 9) OR
|
|
(zoom_level = 12 AND gridrank <= 9) OR
|
|
zoom_level >= 13;
|
|
$$ LANGUAGE SQL IMMUTABLE;
|