fix: render tram stop names, add clustered stations view

api/prepare_facilities.sql

@@ -62,7 +62,7 @@ CREATE TABLE openrailwaymap_facilities_for_search AS
               railway_ref,
               name_tags,
               route_count,
-              way AS geom
+              ST_Centroid(way) AS geom
             FROM stations_with_route_counts
             WHERE
               railway IN ('station', 'halt', 'tram_stop', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site')

docker-compose.yml

@@ -57,7 +57,7 @@ services:
       [ "$$TILES" = "low-med" ] && $$MARTIN --min-zoom 7 --max-zoom 7 --source railway_line_med --output-file /tiles/railway_line_med.mbtiles && mbtiles summary /tiles/railway_line_med.mbtiles
       [ "$$TILES" = "low-med" ] && $$MARTIN --min-zoom 7 --max-zoom 7 --source standard_railway_text_stations_med --output-file /tiles/standard_railway_text_stations_med.mbtiles && mbtiles summary /tiles/standard_railway_text_stations_med.mbtiles
       [ "$$TILES" = "high" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source railway_line_high,railway_text_km --output-file /tiles/high.mbtiles && mbtiles summary /tiles/high.mbtiles
-      [ "$$TILES" = "standard" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source standard_railway_turntables,standard_railway_text_stations,standard_railway_symbols,standard_railway_switch_ref --output-file /tiles/standard.mbtiles && mbtiles summary /tiles/standard.mbtiles
+      [ "$$TILES" = "standard" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source standard_railway_turntables,standard_railway_text_stations,standard_railway_grouped_stations,standard_railway_symbols,standard_railway_switch_ref --output-file /tiles/standard.mbtiles && mbtiles summary /tiles/standard.mbtiles
       [ "$$TILES" = "speed" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source speed_railway_signals --output-file /tiles/speed.mbtiles && mbtiles summary /tiles/speed.mbtiles
       [ "$$TILES" = "signals" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source signals_railway_signals,signals_signal_boxes --output-file /tiles/signals.mbtiles && mbtiles summary /tiles/signals.mbtiles
       [ "$$TILES" = "electrification" ] && $$MARTIN --min-zoom 8 --max-zoom "$$MAX_ZOOM" --source electrification_signals --output-file /tiles/electrification.mbtiles && mbtiles summary /tiles/electrification.mbtiles

import/sql/get_station_importance.sql

@@ -60,24 +60,39 @@ CREATE OR REPLACE VIEW station_nodes_platforms_rel_count AS
 -- needs about 3 to 4 minutes for whole Germany
 -- or about 20 to 30 minutes for the whole planet
 CREATE MATERIALIZED VIEW IF NOT EXISTS stations_with_route_counts AS
-  SELECT DISTINCT ON (osm_id, name, station, railway_ref, railway) id, osm_id, name, station, railway_ref, railway, route_count, name_tags, way
+  SELECT
+    MIN(id) as id,
+    MIN(osm_id) as osm_id,
+    name,
+    station,
+    railway_ref,
+    railway,
+    MAX(route_count) as route_count,
+    hstore(string_agg(nullif(name_tags::text, ''), ',')) as name_tags,
+    ST_RemoveRepeatedPoints(ST_Collect(way)) as way
+  FROM (
+    SELECT
+      *,
+      ST_ClusterDBSCAN(way, 400, 1) OVER (PARTITION BY name, station, railway_ref, railway) AS cluster_id
     FROM (
-      SELECT id, osm_id, name, station, railway_ref, railway, ARRAY_LENGTH(ARRAY_AGG(DISTINCT route_id), 1) AS route_count, name_tags, way
-        FROM (
-          SELECT id, osm_id, name, station, railway_ref, railway, UNNEST(route_ids) AS route_id, name_tags, way
-            FROM station_nodes_stop_positions_rel_count
-          UNION ALL
-          SELECT id, osm_id, name, station, railway_ref, railway, UNNEST(route_ids) AS route_id, name_tags, way
-            FROM station_nodes_platforms_rel_count
-        ) AS a
-        GROUP BY id, osm_id, name, station, railway_ref, railway, way, name_tags
+      SELECT MIN(id) as id, MIN(osm_id) as osm_id, name, station, railway_ref, railway, ARRAY_LENGTH(ARRAY_AGG(DISTINCT route_id), 1) AS route_count, name_tags, way
+      FROM (
+        SELECT id, osm_id, name, station, railway_ref, railway, UNNEST(route_ids) AS route_id, name_tags, way
+        FROM station_nodes_stop_positions_rel_count
+        UNION ALL
+        SELECT id, osm_id, name, station, railway_ref, railway, UNNEST(route_ids) AS route_id, name_tags, way
+        FROM station_nodes_platforms_rel_count
+      ) AS a
+      GROUP BY name, station, railway_ref, railway, way, name_tags
       UNION ALL
       SELECT id, osm_id, name, station, railway_ref, railway, 0 AS route_count, name_tags, way
-        FROM stations
-        WHERE railway IN ('station', 'halt', 'tram_stop', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site')
-    ) AS facilities
-    -- ORDER BY is required to ensure that the larger route_count is used.
-    ORDER BY osm_id, name, station, railway_ref, railway, route_count DESC;
+      FROM stations
+      WHERE railway IN ('station', 'halt', 'tram_stop', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site')
+   ) AS grouped_facilities
+  ) AS facilities
+  GROUP BY name, station, railway_ref, railway, cluster_id
+  -- ORDER BY is required to ensure that the larger route_count is used.
+  ORDER BY name, station, railway_ref, railway, route_count DESC;
 
 CREATE INDEX IF NOT EXISTS stations_with_route_counts_geom_index
   ON stations_with_route_counts

import/sql/tile_views.sql

@@ -139,7 +139,7 @@ CREATE OR REPLACE VIEW standard_railway_text_stations_low AS
   SELECT
     id,
     osm_id,
-    way,
+    ST_Centroid(way) as way,
     railway_ref as label
   FROM stations_with_route_counts
   WHERE
@@ -153,7 +153,7 @@ CREATE OR REPLACE VIEW standard_railway_text_stations_med AS
   SELECT
     id,
     osm_id,
-    way,
+    ST_Centroid(way) as way,
     railway_ref as label
   FROM stations_with_route_counts
   WHERE
@@ -185,23 +185,47 @@ CREATE OR REPLACE VIEW standard_railway_text_stations AS
       WHEN railway = 'site' THEN 600
       WHEN railway = 'crossover' THEN 700
       ELSE 50
-    END AS rank
-  FROM
-    (SELECT
-       id,
-       osm_id,
-       way,
-       railway,
-       route_count,
-       station,
-       railway_ref,
-       name
-     FROM stations_with_route_counts
-     WHERE railway IN ('station', 'halt', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site')
-       AND name IS NOT NULL
-    ) AS r
+    END AS rank,
+    count
+  FROM (
+    SELECT
+      id,
+      osm_id,
+      ST_Centroid(way) as way,
+      railway,
+      route_count,
+      station,
+      railway_ref,
+      name,
+      ST_NumGeometries(way) as count
+    FROM stations_with_route_counts
+    WHERE railway IN ('station', 'halt', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site', 'tram_stop')
+      AND name IS NOT NULL
+  ) AS r
   ORDER by rank DESC NULLS LAST, route_count DESC NULLS LAST;
 
+CREATE OR REPLACE VIEW standard_railway_grouped_stations AS
+  SELECT
+    id,
+    osm_id,
+    way,
+    railway,
+    station,
+    railway_ref as label,
+    name
+  FROM (
+    SELECT
+      id,
+      osm_id,
+      ST_Buffer(ST_ConvexHull(way), 50) as way,
+      railway,
+      station,
+      railway_ref,
+      name
+    FROM stations_with_route_counts
+    WHERE railway IN ('station', 'halt', 'service_station', 'yard', 'junction', 'spur_junction', 'crossover', 'site', 'tram_stop')
+  ) AS r;
+
 CREATE OR REPLACE VIEW standard_railway_symbols AS
   SELECT
     id,

martin/configuration.yml

@@ -201,6 +201,21 @@ postgres:
         station: string
         label: string
         name: string
+        count: integer
+
+    standard_railway_grouped_stations:
+      schema: public
+      table: standard_railway_grouped_stations
+      srid: 3857
+      geometry_column: way
+      geometry_type: POLYGON
+      properties:
+        id: integer
+        osm_id: integer
+        railway: string
+        station: string
+        label: string
+        name: string
 
     standard_railway_symbols:
       schema: public

proxy/js/features.mjs

@@ -156,6 +156,7 @@ const features = {
   'standard_railway_text_stations_low-standard_railway_text_stations_low': stationFeatures,
   'standard_railway_text_stations_med-standard_railway_text_stations_med': stationFeatures,
   'openrailwaymap_standard-standard_railway_text_stations': stationFeatures,
+  'openrailwaymap_standard-standard_railway_grouped_stations': stationFeatures,
   'openrailwaymap_standard-standard_railway_turntables': {
     features: {
       turntable: {

proxy/js/styles.mjs

@@ -1384,6 +1384,48 @@ const layers = Object.fromEntries(knownThemes.map(theme => [theme, {
         'text-max-width': 5,
       },
     },
+    {
+      id: 'railway_grouped_stations',
+      type: 'fill',
+      minzoom: 8,
+      source: 'openrailwaymap_standard',
+      'source-layer': 'standard_railway_grouped_stations',
+      filter: ['step', ['zoom'],
+        ['all',
+          ['==', ['get', 'railway'], 'station'],
+          ['!=', ['get', 'station'], 'light_rail'],
+          ['!=', ['get', 'station'], 'subway'],
+          ['!=', ['get', 'station'], 'funicular'],
+        ],
+        9,
+        ['all',
+          ['any',
+            ['==', ['get', 'railway'], 'station'],
+            ['==', ['get', 'railway'], 'halt'],
+          ],
+          ['!=', ['get', 'station'], 'funicular'],
+        ],
+        10,
+        ['all',
+          ['!=', ['get', 'railway'], 'tram_stop'],
+          ['!=', ['get', 'station'], 'funicular'],
+        ],
+        13,
+        ['!=', ['get', 'station'], 'funicular'],
+      ],
+      paint: {
+        'fill-color': ['case',
+          ['==', ['get', 'railway'], 'tram_stop'], colors[theme].styles.standard.tram,
+          ['==', ['get', 'station'], 'light_rail'], colors[theme].styles.standard.light_rail,
+          ['==', ['get', 'station'], 'subway'], colors[theme].styles.standard.subway,
+          colors[theme].styles.standard.main,
+        ],
+        'fill-opacity': ['case',
+          ['boolean', ['feature-state', 'hover'], false], 0.3,
+          0.2,
+        ],
+      },
+    },
     {
       id: 'railway_tunnel_casing',
       type: 'line',
@@ -2170,30 +2212,24 @@ const layers = Object.fromEntries(knownThemes.map(theme => [theme, {
             ['==', ['get', 'railway'], 'station'],
             ['==', ['get', 'railway'], 'halt'],
           ],
+          ['!=', ['get', 'railway'], 'tram_stop'],
           ['!=', ['get', 'station'], 'funicular'],
         ],
         10,
         ['all',
           ['!=', ['get', 'railway'], 'tram_stop'],
           ['!=', ['get', 'station'], 'funicular'],
         ],
-        13,
-        ['!=', ['get', 'station'], 'funicular'],
       ],
       paint: {
         'text-color': ['case',
           ['==', ['get', 'railway'], 'yard'], colors[theme].styles.standard.yardText,
-          ['==', ['get', 'railway'], 'tram_stop'], colors[theme].styles.standard.tramStopText,
           ['==', ['get', 'railway'], 'station'], colors[theme].styles.standard.stationsText,
           ['==', ['get', 'railway'], 'halt'], colors[theme].styles.standard.stationsText,
           colors[theme].styles.standard.defaultText,
         ],
         'text-halo-color': ['case',
           ['boolean', ['feature-state', 'hover'], false], colors[theme].hover.textHalo,
-          // ['==', ['get', 'railway'], 'yard'], colors[theme].halo,
-          // ['==', ['get', 'railway'], 'tram_stop'], colors[theme].halo,
-          // ['==', ['get', 'railway'], 'station'], colors[theme].halo,
-          // ['==', ['get', 'railway'], 'halt'], colors[theme].halo,
           colors[theme].halo,
         ],
         'text-halo-width': 1.5,
@@ -2204,17 +2240,51 @@ const layers = Object.fromEntries(knownThemes.map(theme => [theme, {
           ['get', 'label'],
           10,
           ['get', 'name'],
+          15,
+          ['case',
+            ['>', ['get', 'count'], 1], ['concat', ['get', 'name'], ' (', ['get', 'count'], ')'],
+            ['get', 'name'],
+          ],
         ],
         // TODO light rail / subway oblique font
         'text-font': ['Noto Sans Bold'],
-        // TODO text-variable-anchor-offset
+        'text-variable-anchor': ['center', 'top', 'bottom', 'left', 'right'],
         'text-size': 11,
         'text-padding': 10,
         'text-max-width': 5,
-        'text-offset': ['case',
-          ['==', ['get', 'railway'], 'tram_stop'], ['literal', [0, 1]],
-          ['literal', [0, 0]]
+      },
+    },
+    {
+      id: 'railway_tram_stations',
+      type: 'symbol',
+      minzoom: 13,
+      source: 'openrailwaymap_standard',
+      'source-layer': 'standard_railway_text_stations',
+      filter: ['==', ['get', 'railway'], 'tram_stop'],
+      paint: {
+        'text-color': colors[theme].styles.standard.tramStopText,
+        'text-halo-color': ['case',
+          ['boolean', ['feature-state', 'hover'], false], colors[theme].hover.textHalo,
+          colors[theme].halo,
         ],
+        'text-halo-width': 1.5,
+      },
+      layout: {
+        'symbol-z-order': 'source',
+        'text-field': ['step', ['zoom'],
+          ['get', 'name'],
+          15,
+          ['case',
+            ['>', ['get', 'count'], 1], ['concat', ['get', 'name'], ' (', ['get', 'count'], ')'],
+            ['get', 'name'],
+          ],
+        ],
+        // TODO light rail / subway oblique font
+        'text-font': ['Noto Sans Bold'],
+        'text-size': 11,
+        'text-padding': 10,
+        'text-max-width': 5,
+        'text-variable-anchor': ['top', 'bottom'],
       },
     },
     searchResults,
@@ -4052,6 +4122,7 @@ const legendData = {
           railway: feature.feature,
         },
       })),
+    "openrailwaymap_standard-standard_railway_grouped_stations": [],
     "openrailwaymap_standard-standard_railway_turntables": [
       {
         legend: 'Turntable',

proxy/proxy.conf.template

@@ -94,7 +94,7 @@ server {
   location / {
     if ($http_referer ~ ^http://localhost) {
       rewrite ^/high$ /railway_line_high,railway_text_km last;
-      rewrite ^/standard$ /standard_railway_turntables,standard_railway_text_stations,standard_railway_symbols,standard_railway_switch_ref last;
+      rewrite ^/standard$ /standard_railway_turntables,standard_railway_text_stations,standard_railway_grouped_stations,standard_railway_symbols,standard_railway_switch_ref last;
       rewrite ^/speed$ /speed_railway_signals last;
       rewrite ^/signals$ /signals_railway_signals,signals_signal_boxes last;
       rewrite ^/electrification$ /electrification_signals last;