Show islands #68

layers/place/island_polygon_update.sql

@@ -0,0 +1,5 @@
+-- etldoc:  osm_island_polygon ->  osm_island_polygon
+UPDATE osm_island_polygon  SET geometry=topoint(geometry)
+WHERE ST_GeometryType(geometry) <> 'ST_Point';
+
+ANALYZE osm_island_polygon;

layers/place/island_rank.sql

@@ -0,0 +1,9 @@
+CREATE OR REPLACE FUNCTION island_rank(area REAL) RETURNS INT AS $$
+    SELECT CASE
+        WHEN area < 10000000 THEN 6
+        WHEN area BETWEEN  1000000 AND 15000000 THEN 5
+        WHEN area BETWEEN 15000000 AND 40000000 THEN 4
+        WHEN area > 40000000 THEN 3
+        ELSE 7
+    END;
+$$ LANGUAGE SQL IMMUTABLE STRICT;

layers/place/layer.sql

@@ -5,6 +5,8 @@
 -- etldoc: osm_continent_point -> layer_place
 -- etldoc: osm_country_point   -> layer_place
 -- etldoc: osm_state_point     -> layer_place
+-- etldoc: osm_island_point    -> layer_place
+-- etldoc: osm_island_polygon  -> layer_place
 -- etldoc: layer_city          -> layer_place
 
 CREATE OR REPLACE FUNCTION layer_place(bbox geometry, zoom_level int, pixel_width numeric)
@@ -17,7 +19,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class t
     UNION ALL
     SELECT
         osm_id, geometry, name, COALESCE(NULLIF(name_en, ''), name) AS name_en,
-        'country' AS class,"rank", NULL::int AS capital
+        'country' AS class, "rank", NULL::int AS capital
     FROM osm_country_point
     WHERE geometry && bbox AND "rank" <= zoom_level AND name <> ''
     UNION ALL
@@ -32,6 +34,22 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class t
               is_in_country IN ('United Kingdom', 'USA', 'Россия', 'Brasil', 'China', 'India') OR
               is_in_country_code IN ('AU', 'CN', 'IN', 'BR', 'US'))
     UNION ALL
+    SELECT
+        osm_id, geometry, name, COALESCE(NULLIF(name_en, ''), name) AS name_en,
+        'island' AS class, 7 AS "rank", NULL::int AS capital
+    FROM osm_island_point
+    WHERE zoom_level BETWEEN 12 AND 14
+        AND geometry && bbox
+    UNION ALL
+    SELECT
+        osm_id, geometry, name, COALESCE(NULLIF(name_en, ''), name) AS name_en,
+        'island' AS class, island_rank(area) AS "rank", NULL::int AS capital
+    FROM osm_island_polygon
+    WHERE geometry && bbox AND
+        ((zoom_level = 8 AND island_rank(area) <= 3)
+        OR (zoom_level = 9 AND island_rank(area) <= 4)
+        OR (zoom_level >= 10))
+    UNION ALL
     SELECT
         osm_id, geometry, name, name_en,
         place::text AS class, "rank", capital

layers/place/mapping.yaml

@@ -88,6 +88,34 @@ tables:
       place:
       - country
 
+  # etldoc: imposm3 -> osm_island_polygon
+  island_polygon:
+    type: polygon
+    fields:
+    - name: osm_id
+      type: id
+    - name: geometry
+      type: geometry
+    - name: area
+      type: pseudoarea
+    - *name
+    - *name_en
+    - *name_de
+    - *name_fr
+    - *name_es
+    - *name_pt
+    - *name_ru
+    - *name_zh
+    - *name_ar
+    - *name_ja
+    - *rank
+    filters:
+      exclude_tags:
+      - [ "name", "__nil__" ]
+    mapping:
+      place:
+      - island
+
   # etldoc: imposm3 -> osm_island_point
   island_point:
     type: point

layers/place/place.yaml

@@ -57,6 +57,8 @@ schema:
   - ./types.sql
   - ./capital.sql
   - ./city.sql
+  - ./island_polygon_update.sql
+  - ./island_rank.sql
   - ./merge_country_rank.sql
   - ./merge_city_rank.sql
   - ./merge_state_rank.sql