Update landuse lines layer - filter only tree_row

Author: Rub21

DOC-VTILES.md

@@ -137,12 +137,12 @@ TODO: fix according to schema
 
 # Land Use - Lines (landuse_lines)
 
-TODO: fix according to schema
-
-
-   | MView | Zoom Levels | Simplification (m) | Min Area (m²) | Function | Notes |
+   - Filtering only tree_row, since this is the only one used in the mapstyles
+   
+   | MView | Zoom Levels | Simplification (m) | Min Length (m) | Function | Notes |
    |-------|-------------|-------------------|---------------|---------|-------|
-   | `mv_landuse_lines_z14_20` | 14-20 ⚠️ | - | - | create_generic_mview | Should be z14_15 + z16_20 |
+   | `mv_landuse_lines_z16_20` | 16-20 | 5 | 0 | create_lines_mview | Filter: type IN ('tree_row') |
+   | `mv_landuse_lines_z14_15` | 14-15 | 5 | - | create_mview_line_from_mview | Derived from z16_20 |
 
 # Transport - Areas (transport_areas)
 

images/tiler-imposm/queries/ohm_mviews/landuse.sql

@@ -119,14 +119,40 @@ SELECT create_points_centroids_mview(
 );
 
 
+
+-- Parameters:
+--   source_table    TEXT              - Name of the source table or materialized view
+--   view_name       TEXT              - Name of the materialized view to create
+--   simplify_tol    DOUBLE PRECISION  - Simplification tolerance (0 = no simplification)
+--   min_length      DOUBLE PRECISION  - Minimum length in m to include (0 = no filter)
+--   unique_columns  TEXT              - Comma-separated columns for unique index (default: 'id, osm_id, type')
+--   where_filter    TEXT              - Optional WHERE clause filter (e.g., "highway != 'abandoned'"). NULL = no filter
+--
+-- Notes:
+--   - Creates the materialized view using a temporary swap mechanism
+--   - Adds a spatial index (GiST) on geometry and a unique index on unique_columns
+--   - Useful for creating views at different zoom levels with variable simplification
+--   - where_filter is appended to WHERE clause with AND
+-- -- ============================================================================
+-- DROP FUNCTION IF EXISTS create_lines_mview(TEXT, TEXT, DOUBLE PRECISION, DOUBLE PRECISION, TEXT, TEXT);
+
+-- CREATE OR REPLACE FUNCTION create_lines_mview(
+--     source_table TEXT,
+--     view_name TEXT,
+--     simplify_tol DOUBLE PRECISION DEFAULT 0,
+--     min_length DOUBLE PRECISION DEFAULT 0,
+--     unique_columns TEXT DEFAULT 'id, osm_id, type',
+--     where_filter TEXT DEFAULT NULL
+-- )
+
+
 -- ============================================================================
--- Create materialized views for landuse lines, TODO fix right zoom to the standard
+-- Create materialized views for landuse lines, 
+-- Only tree_row type is used in the map style
 -- ============================================================================
-SELECT create_generic_mview(
-    'osm_landuse_lines',
-    'mv_landuse_lines_z14_20',
-    ARRAY['osm_id', 'type', 'class']
-);
+SELECT create_lines_mview('osm_landuse_lines', 'mv_landuse_lines_z16_20', 5, 0, 'id, osm_id, type', 'type IN (''tree_row'')');
+SELECT create_mview_line_from_mview('mv_landuse_lines_z16_20', 'mv_landuse_lines_z14_15', 5, NULL);
+
 
 -- Refresh areas views
 -- REFRESH MATERIALIZED VIEW CONCURRENTLY mv_landuse_areas_z16_20;

images/tiler-imposm/queries/ohm_mviews/transport_lines.sql

@@ -164,15 +164,16 @@ $$ LANGUAGE plpgsql;
 -- ============================================================================
 -- Create materialized views for  transport lines
 -- ============================================================================
-DROP FUNCTION IF EXISTS mv_transport_lines_z16_20;
+DROP MATERIALIZED VIEW IF EXISTS mv_transport_lines_z16_20 CASCADE;
 SELECT create_transport_lines_mview('mv_transport_lines_z16_20', 0, ARRAY['*'], ARRAY['railway','route']);
-SELECT create_mview_line_from_mview('mv_transport_lines_z16_20', 'mv_transport_lines_z13_15', 5, 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'', ''tertiary'', ''tertiary_link'', ''miniature'', ''narrow_gauge'', ''dismantled'', ''abandoned'', ''disused'', ''razed'', ''light_rail'', ''preserved'', ''proposed'', ''tram'', ''funicular'', ''monorail'', ''taxiway'', ''runway'', ''raceway'', ''residential'', ''service'', ''unclassified'') AND class IN (''railway'')');
-SELECT create_mview_line_from_mview('mv_transport_lines_z13_15', 'mv_transport_lines_z10_12', 20, 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'', ''tertiary'', ''tertiary_link'', ''miniature'', ''narrow_gauge'', ''dismantled'', ''abandoned'', ''disused'', ''razed'', ''light_rail'', ''preserved'', ''proposed'', ''tram'', ''funicular'', ''monorail'', ''taxiway'', ''runway'') AND class IN (''railway'')');
+SELECT create_mview_line_from_mview('mv_transport_lines_z16_20', 'mv_transport_lines_z13_15', 5, 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'', ''tertiary'', ''tertiary_link'', ''miniature'', ''narrow_gauge'', ''dismantled'', ''abandoned'', ''disused'', ''razed'', ''light_rail'', ''preserved'', ''proposed'', ''tram'', ''funicular'', ''monorail'', ''taxiway'', ''runway'', ''raceway'', ''residential'', ''service'', ''unclassified'') OR class IN (''railway'')');
+SELECT create_mview_line_from_mview('mv_transport_lines_z13_15', 'mv_transport_lines_z10_12', 20, 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'', ''tertiary'', ''tertiary_link'', ''miniature'', ''narrow_gauge'', ''dismantled'', ''abandoned'', ''disused'', ''razed'', ''light_rail'', ''preserved'', ''proposed'', ''tram'', ''funicular'', ''monorail'', ''taxiway'', ''runway'') OR class IN (''railway'')');
 SELECT create_mview_line_from_mview('mv_transport_lines_z10_12', 'mv_transport_lines_z8_9', 100, NULL);
-SELECT create_mview_line_from_mview('mv_transport_lines_z8_9', 'mv_transport_lines_z6_7', 200 , 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'') AND class IN (''railway'')');
+SELECT create_mview_line_from_mview('mv_transport_lines_z8_9', 'mv_transport_lines_z6_7', 200 , 'type IN (''motorway'', ''motorway_link'', ''trunk'', ''trunk_link'', ''construction'', ''primary'', ''primary_link'', ''rail'', ''secondary'', ''secondary_link'') OR class IN (''railway'')');
 SELECT create_mview_line_from_mview('mv_transport_lines_z6_7', 'mv_transport_lines_z5', 1000 , NULL);
 
 
+
 -- Refresh lines views
 -- REFRESH MATERIALIZED VIEW CONCURRENTLY mv_transport_lines_z5;
 -- REFRESH MATERIALIZED VIEW CONCURRENTLY mv_transport_lines_z6_7;

images/tiler-imposm/queries/utils/create_mview_centroid_mview.sql

@@ -4,8 +4,10 @@ DROP FUNCTION IF EXISTS create_mview_centroid_from_mview(TEXT, TEXT, TEXT);
  * Creates a new materialized view with point centroids from an existing materialized view
  * containing area geometries (polygons/multipolygons).
  * 
- * Converts area geometries to their centroid points, useful for point-based rendering
- * at lower zoom levels or when displaying areas as points.
+ * Converts area geometries to their centroid points using ST_MaximumInscribedCircle,
+ * which provides a better centroid position (center of the largest inscribed circle)
+ * compared to ST_Centroid. Useful for point-based rendering at lower zoom levels
+ * or when displaying areas as points.
  * 
  * Uses a temporary view pattern to avoid downtime: creates the new view with a _tmp suffix,
  * then atomically replaces the old view by dropping it and renaming the temporary one.
@@ -48,7 +50,7 @@ BEGIN
     -- 2) Build the CREATE MATERIALIZED VIEW statement
     sql := format(
         'CREATE MATERIALIZED VIEW %I AS
-         SELECT %s, ST_Centroid(geometry) AS geometry
+         SELECT %s, (ST_MaximumInscribedCircle(geometry)).center AS geometry
          FROM %I
          WHERE geometry IS NOT NULL
            AND ST_GeometryType(geometry) IN (''ST_Polygon'', ''ST_MultiPolygon'')',

images/tiler-server/config/providers/landuse_lines.toml

@@ -1,5 +1,5 @@
 [[providers.layers]]
-name = "landuse_lines"
+name = "landuse_lines_z14_15"
 geometry_fieldname = "geometry"
 geometry_type = "linestring"
 id_fieldname = "osm_id"
@@ -16,13 +16,45 @@ SELECT
     end_decdate,
     {{LENGUAGES}}
 FROM 
-    mv_landuse_lines_z14_20 
+    mv_landuse_lines_z14_15 
+WHERE 
+    geometry && !BBOX!
+"""
+
+[[providers.layers]]
+name = "landuse_lines_z16_20"
+geometry_fieldname = "geometry"
+geometry_type = "linestring"
+id_fieldname = "osm_id"
+sql = """
+SELECT 
+    ST_AsMVTGeom(geometry, !BBOX!) AS geometry, 
+    osm_id, 
+    name,
+    class, 
+    type, 
+    start_date, 
+    end_date, 
+    start_decdate, 
+    end_decdate,
+    {{LENGUAGES}}
+FROM 
+    mv_landuse_lines_z16_20 
 WHERE 
     geometry && !BBOX!
 """
 #######Maps
+
 [[maps.layers]]
 name = "landuse_lines"
-provider_layer = "osm.landuse_lines"
+provider_layer = "osm.landuse_lines_z14_15"
 min_zoom = 14
+max_zoom = 15
+
+[[maps.layers]]
+name = "landuse_lines"
+provider_layer = "osm.landuse_lines_z16_20"
+min_zoom = 16
 max_zoom = 20
+
+