Add ice and shelves

schema/create_schema.sh

@@ -20,6 +20,7 @@ function main() {
     exec_psql_file "layers/building.sql"
     exec_psql_file "layers/boundary.sql"
     exec_psql_file "layers/road.sql"
+    exec_psql_file "layers/ice.sql"
 }
 
 main

schema/layers/ice.sql

@@ -0,0 +1,15 @@
+CREATE OR REPLACE VIEW ice_z0 AS (
+    SELECT geom, 'glacier' AS type FROM ne_110m_glaciated_areas
+);
+
+CREATE OR REPLACE VIEW ice_z2 AS (
+    SELECT geom, 'glacier' AS type FROM ne_50m_glaciated_areas
+    UNION ALL
+    SELECT geom, 'ice_shelf' AS type FROM ne_50m_antarctic_ice_shelves_polys
+);
+
+CREATE OR REPLACE VIEW ice_z5 AS (
+    SELECT geom, 'glacier' AS type FROM ne_10m_glaciated_areas
+    UNION ALL
+    SELECT geom, 'ice_shelf' AS type FROM ne_10m_antarctic_ice_shelves_polys
+);