Merge 27c2ab76ce into e6faa69a70

layers/power/README.md

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+## power
+
+### Docs
+
+### Mapping Diagram
+![Mapping diagram for transportation](mapping_diagram.png?raw=true)
+
+### ETL diagram
+![ETL diagram for transportation](etl_diagram.png?raw=true)

layers/power/mapping.yaml

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+tables:
+  # etldoc: imposm3 -> osm_power_point
+  power_point:
+    type: point
+    fields:
+    - name: osm_id
+      type: id
+    - name: geometry
+      type: geometry
+    - key: power
+      name: class
+      type: string
+    - key: plant:source
+      name: source
+      type: string
+    - key: plant:method
+      name: method
+      type: string
+    - key: generator:source
+      name: gen_source
+      type: string
+    - key: generator:method
+      name: gen_method
+      type: string  
+    - key: power
+      name: name
+      type: string  
+    mapping:
+      power:
+      - tower
+      - pole
+      - catenary_mast
+      - generator
+      - portal
+      - transformer
+      - switch
+      - insulator
+  # etldoc: imposm3 -> osm_power_linestring
+  power_linestring:
+    type: linestring
+    fields:
+    - name: osm_id
+      type: id
+    - name: geometry
+      type: geometry
+    - key: power
+      name: class
+      type: string
+    - key: plant:source
+      name: source
+      type: string
+    - key: plant:method
+      name: method
+      type: string
+    - key: generator:source
+      name: gen_source
+      type: string
+    - key: generator:method
+      name: gen_method
+      type: string  
+    - key: name
+      name: name
+      type: string
+    mapping:
+      power:
+      - line
+      - minor_line
+  # etldoc: imposm3 -> osm_power_polygon
+  power_polygon:
+    type: polygon
+    fields:
+    - name: osm_id
+      type: id
+    - name: geometry
+      type: geometry
+    - key: power
+      name: class
+      type: string
+    - key: plant:source
+      name: source
+      type: string
+    - key: plant:method
+      name: method
+      type: string
+    - key: generator:source
+      name: gen_source
+      type: string
+    - key: generator:method
+      name: gen_method
+      type: string  
+    - key: name
+      name: name
+      type: string  
+    mapping:
+      power:
+      - generator
+      - plant
+      - substation
+      - transformer

layers/power/power.sql

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+-- etldoc: layer_power[shape=record fillcolor=lightpink, style="rounded,filled",
+-- etldoc:     label="layer_power | <z13> z13 | <z14> z14+ " ] ;
+
+CREATE OR REPLACE FUNCTION layer_power(bbox geometry, zoom_level int)
+RETURNS TABLE(geometry geometry, class text, source text, method text, name text) AS $$
+SELECT geometry, class, COALESCE(NULLIF(source, ''),NULLIF(gen_source, '')), method, name
+FROM(
+    -- etldoc: osm_power_point -> layer_power:z13
+    SELECT geometry, class, source, gen_source, method, name
+    FROM osm_power_point
+    WHERE zoom_level >= 13 AND class = 'tower' AND geometry && bbox
+    UNION ALL
+    -- etldoc: osm_power_point -> layer_power:z14
+    SELECT geometry, class, source, gen_source, method, name
+    FROM osm_power_point
+    WHERE zoom_level >= 14 AND class = 'pole' AND geometry && bbox
+    UNION ALL
+    -- etldoc: osm_power_linestring -> layer_power:z13
+    SELECT geometry, class, source, gen_source,  method, name
+    FROM osm_power_linestring
+    WHERE zoom_level >= 13 AND class = 'line' AND geometry && bbox
+    UNION ALL
+    -- etldoc: osm_power_linestring -> layer_power:z14
+    SELECT geometry, class, source, gen_source,  method, name
+    FROM osm_power_linestring
+    WHERE zoom_level >= 14 AND class = 'minor_line' AND geometry && bbox
+    UNION ALL
+    -- etldoc: osm_power_polygon -> layer_power:z13    
+    SELECT geometry, class, source, gen_source, method, name
+    FROM osm_power_polygon
+    WHERE zoom_level >= 13 AND class = 'plant' AND geometry && bbox 
+    UNION ALL
+    -- etldoc: osm_power_polygon -> layer_power:z14
+    SELECT geometry, class, source, gen_source, method, name
+    FROM osm_power_polygon
+    WHERE zoom_level >= 14 AND class IN ('substation', 'generator', 'transformer') AND geometry && bbox
+    ) AS zoom_levels
+WHERE geometry && bbox;
+$$ LANGUAGE SQL STABLE
+                -- STRICT
+                PARALLEL SAFE;

layers/power/power.yaml

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+layer:
+  id: "power"
+  description: |
+      **power** contains power cables and lines.
+  buffer_size: 4
+  fields:
+    name:
+      description: |
+          Name of the feature.
+    class:
+      description: |
+          Class is derived from the value of the
+          [`power`](http://wiki.openstreetmap.org/wiki/Key:power) tag.
+      values:
+      - line
+      - minor_line
+      - tower
+      - pole
+      - catenary_mast
+      - plant
+      - generator
+      - substation
+      - portal
+      - transformer
+      - switch
+      - insulator
+    source:
+      description: |
+          Class is derived from the value of the
+          [`plant:source`](http://wiki.openstreetmap.org/wiki/Key:plant:source) tag.
+      values:
+      - battery
+      - biogas
+      - biomass
+      - coal
+      - combustion
+      - diesel
+      - gas
+      - geothermal
+      - hydro
+      - nuclear
+      - oil
+      - solar
+      - solar_thermal
+      - waste
+      - wind
+      - wind_turbine
+      - wood
+    method:
+      description: |
+          Class is derived from the value of the
+          [`plant:method`](http://wiki.openstreetmap.org/wiki/Key:plant:method) tag.
+      values:
+      - anaerobic_digestion
+      - combustion
+      - dam
+      - fission
+      - gasification
+      - photovoltaic
+      - run-of-the-river
+      - thermal
+      - water-pumpted-storage
+      - water-storage
+      - wind_turbine    
+
+  datasource:
+    geometry_field: geometry
+    query: (SELECT geometry, class, source, method, name FROM layer_power(!bbox!, z(!scale_denominator!))) AS t
+
+schema:
+  - ./power.sql
+datasources:
+  - type: imposm3
+    mapping_file: ./mapping.yaml

openmaptiles.yaml

@@ -1,5 +1,6 @@
 tileset:
   layers:
+    - layers/power/power.yaml
     - layers/water/water.yaml
     - layers/waterway/waterway.yaml
     - layers/landcover/landcover.yaml