Add network to transport layer (#1158)

Closes #1153 

This PR populates the existing `network_type` field in the route table with highway route network information, using the most important value in cases of concurrencies.  In order to expose this value, two files `network_type.sql` and `update_route_member.sql` were moved from the `transportation_name` layer to the `transportation` layer.

Below is a representative zoom level 6 with motorways only shown for `us-interstate` network types.  This sample was generated from this PR using a [custom branch](https://github.com/ZeLonewolf/openstreetmap-americana/tree/selective-highway-zoom) of openstreetmap-americana.  This provides a simplified rendering of the highway network which excludes many minor motorway roads and sections.
![image](https://user-images.githubusercontent.com/3254090/126420985-c380b54b-a991-4a7c-a4c1-40a5cf5ec6b0.png)

Below is zoom level 6 on the current [openstreetmap-americana](https://zelonewolf.github.io/openstreetmap-americana/#6/42.148/-73.712).  Notice the many additional stubs, motorway islands, and minor routes which are present.  Instead of rendering `highway=trunk` to make this network look nice, we can instead suppress non-interstate roads and withhold motorway+trunk rendering to a closer zoom:
![image](https://user-images.githubusercontent.com/3254090/126421148-71e780ec-991d-4e38-a82a-85015b349e97.png)

layers/transportation/transportation.sql

@@ -15,6 +15,7 @@ CREATE OR REPLACE FUNCTION layer_transportation(bbox geometry, zoom_level int)
                 geometry  geometry,
                 class     text,
                 subclass  text,
+                network   text,
                 ramp      int,
                 oneway    int,
                 brunnel   text,
@@ -47,6 +48,7 @@ SELECT osm_id,
                THEN COALESCE(NULLIF(public_transport, ''), highway)
            WHEN aerialway IS NOT NULL THEN aerialway
            END AS subclass,
+       NULLIF(network, '') AS network,
        -- All links are considered as ramps as well
        CASE
            WHEN highway_is_link(highway) OR highway = 'steps'
@@ -69,6 +71,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -98,6 +101,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -127,6 +131,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -156,6 +161,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -185,6 +191,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -214,6 +221,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -243,6 +251,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -272,6 +281,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -303,6 +313,7 @@ FROM (
                 geometry,
                 highway,
                 construction,
+                network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -351,6 +362,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -383,6 +395,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -415,6 +428,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -446,6 +460,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -477,6 +492,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -509,6 +525,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 railway,
                 NULL AS aerialway,
                 NULL AS shipway,
@@ -541,6 +558,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 aerialway,
                 NULL AS shipway,
@@ -571,6 +589,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 aerialway,
                 NULL AS shipway,
@@ -600,6 +619,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 NULL AS aerialway,
                 shipway,
@@ -629,6 +649,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 NULL AS aerialway,
                 shipway,
@@ -659,6 +680,7 @@ FROM (
                 geometry,
                 NULL AS highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 NULL AS aerialway,
                 shipway,
@@ -693,6 +715,7 @@ FROM (
                 geometry,
                 highway,
                 NULL AS construction,
+                NULL AS network,
                 NULL AS railway,
                 NULL AS aerialway,
                 NULL AS shipway,

layers/transportation/transportation.yaml

@@ -111,6 +111,12 @@ layer:
       - bridleway
       - corridor
       - platform
+    network:
+      description: |
+          The network type derived mainly from [`network`](http://wiki.openstreetmap.org/wiki/Key:network) tag of the road.
+          See more info about [`us-*`](http://wiki.openstreetmap.org/wiki/Road_signs_in_the_United_States),
+          [`ca-transcanada`](https://en.wikipedia.org/wiki/Trans-Canada_Highway),
+          or [`gb-*`](http://wiki.openstreetmap.org/wiki/United_Kingdom_Tagging_Guidelines#UK_roads).
     brunnel:
       description: |
           Mark whether way is a tunnel or bridge.
@@ -174,9 +180,11 @@ layer:
   datasource:
     geometry_field: geometry
     srid: 900913
-    query: (SELECT geometry, class, subclass, oneway, ramp, brunnel, service, layer, level, indoor, bicycle, foot, horse, mtb_scale, surface FROM layer_transportation(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, class, subclass, network, oneway, ramp, brunnel, service, layer, level, indoor, bicycle, foot, horse, mtb_scale, surface FROM layer_transportation(!bbox!, z(!scale_denominator!))) AS t
 schema:
+  - ./network_type.sql
   - ./class.sql
+  - ./update_route_member.sql
   - ./update_transportation_merge.sql
   - ./transportation.sql
 datasources:

layers/transportation/update_route_member.sql

@@ -85,3 +85,13 @@ INSERT INTO osm_route_member (id, concurrency_index)
     ROW_NUMBER() over (PARTITION BY member ORDER BY network_type, network, LENGTH(ref), ref) AS concurrency_index
   FROM osm_route_member
   ON CONFLICT (id) DO UPDATE SET concurrency_index = EXCLUDED.concurrency_index;
+
+UPDATE osm_highway_linestring hl
+  SET network = rm.network_type
+  FROM osm_route_member rm
+  WHERE hl.osm_id=rm.member AND rm.concurrency_index=1;
+
+UPDATE osm_highway_linestring_gen_z11 hl
+  SET network = rm.network_type
+  FROM osm_route_member rm
+  WHERE hl.osm_id=rm.member AND rm.concurrency_index=1;

layers/transportation/update_transportation_merge.sql

@@ -19,6 +19,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z11 AS
 SELECT (ST_Dump(geometry)).geom AS geometry,
        NULL::bigint AS osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -32,6 +33,7 @@ SELECT (ST_Dump(geometry)).geom AS geometry,
 FROM (
          SELECT ST_LineMerge(ST_Collect(geometry)) AS geometry,
                 highway,
+                network,
                 construction,
                 is_bridge,
                 is_tunnel,
@@ -44,7 +46,7 @@ FROM (
                 layer
          FROM osm_highway_linestring_gen_z11
          WHERE ST_IsValid(geometry)
-         GROUP BY highway, construction, is_bridge, is_tunnel, is_ford, bicycle, foot, horse, mtb_scale, layer
+         GROUP BY highway, network, construction, is_bridge, is_tunnel, is_ford, bicycle, foot, horse, mtb_scale, layer
      ) AS highway_union
     ) /* DELAY_MATERIALIZED_VIEW_CREATION */;
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen_z11_geometry_idx
@@ -57,6 +59,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z10 AS
 SELECT ST_Simplify(geometry, ZRes(12)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -81,6 +84,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z9 AS
 SELECT ST_Simplify(geometry, ZRes(11)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -105,6 +109,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring AS
 SELECT (ST_Dump(geometry)).geom AS geometry,
        NULL::bigint AS osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -113,6 +118,7 @@ SELECT (ST_Dump(geometry)).geom AS geometry,
 FROM (
          SELECT ST_LineMerge(ST_Collect(geometry)) AS geometry,
                 highway,
+                network,
                 construction,
                 is_bridge,
                 is_tunnel,
@@ -122,7 +128,7 @@ FROM (
          WHERE (highway IN ('motorway', 'trunk', 'primary') OR
                 highway = 'construction' AND construction IN ('motorway', 'trunk', 'primary'))
            AND ST_IsValid(geometry)
-         GROUP BY highway, construction, is_bridge, is_tunnel, is_ford
+         GROUP BY highway, network, construction, is_bridge, is_tunnel, is_ford
      ) AS highway_union
     ) /* DELAY_MATERIALIZED_VIEW_CREATION */;
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_geometry_idx
@@ -135,6 +141,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z8 AS
 SELECT ST_Simplify(geometry, ZRes(10)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -154,6 +161,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z7 AS
 SELECT ST_Simplify(geometry, ZRes(9)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -174,6 +182,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z6 AS
 SELECT ST_Simplify(geometry, ZRes(8)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -193,6 +202,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z5 AS
 SELECT ST_Simplify(geometry, ZRes(7)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,
@@ -212,6 +222,7 @@ CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen_z4 AS
 SELECT ST_Simplify(geometry, ZRes(6)) AS geometry,
        osm_id,
        highway,
+       network,
        construction,
        is_bridge,
        is_tunnel,

layers/transportation_name/transportation_name.sql

@@ -184,7 +184,6 @@ FROM (
                 NULL::boolean AS indoor
          FROM osm_highway_point p
          WHERE highway = 'motorway_junction' AND zoom_level >= 10
-
      ) AS zoom_levels
 WHERE geometry && bbox
 ORDER BY z_order ASC;

layers/transportation_name/transportation_name.yaml

@@ -104,9 +104,7 @@ layer:
     srid: 900913
     query: (SELECT geometry, name, name_en, name_de, {name_languages}, ref, ref_length, network::text, class::text, subclass, brunnel, layer, level, indoor, route_1, route_2, route_3, route_4, route_5, route_6 FROM layer_transportation_name(!bbox!, z(!scale_denominator!))) AS t
 schema:
-  - ./network_type.sql
   - ./highway_classification.sql
-  - ./update_route_member.sql
   - ./update_transportation_name.sql
   - ./transportation_name.sql
 datasources: