Restrict osmosis_powerline class 8 to 50 kV and above

Author: flacombe

analysers/analyser_osmosis_powerline.py

@@ -398,7 +398,7 @@
 
     UNION
 
-    -- Nodes with no voltages
+    -- Nodes with no (numerical) voltages
     SELECT
         nid,
         tid,
@@ -575,13 +575,32 @@
 sql70 = """
 CREATE TEMP TABLE power_lines_mgmt AS
 
-WITH vertices AS (
+WITH nodes_voltage AS (
+    SELECT
+        nid,
+        tid,
+        unnest(voltages)::varchar AS voltage
+    FROM
+        power_lines_topoedges
+),
+-- We process nodes with voltage > 50 kV only
+nodes_selected AS (
+    SELECT
+        nid
+    FROM nodes_voltage
+    WHERE voltage ~ '^[0-9.]+$' AND
+        voltage::numeric >= 50000
+    GROUP BY nid
+),
+vertices AS (
     SELECT
         e.nid,
         string_agg(CASE e.location WHEN 'overhead' THEN e.circuits::varchar ELSE NULL END, '-' ORDER BY e.circuits desc) AS circuits_overhead,
         string_agg(CASE WHEN e.location!='overhead' THEN e.circuits::varchar ELSE NULL END, '-' ORDER BY e.circuits desc) AS circuits_elsewhere
     FROM
         power_lines_topoedges e
+    JOIN nodes_selected ns ON
+        ns.nid=e.nid
     JOIN nodes n ON
         n.id=e.nid
     GROUP BY
@@ -749,9 +768,9 @@ def __callback80_fix(self, res):
                 result.append({"~": {"line_management": res[2]}})
         if res[3]:
             if res[5] is None:
-                result.append({"+": {"line_management": res[3]}})
+                result.append({"+": {"location:transition": res[3]}})
             elif res[5] != res[3]:
-                result.append({"~": {"line_management": res[3]}})
+                result.append({"~": {"location:transition": res[3]}})
 
         return result
 

tests/osmosis_powerline.test.osm

@@ -17,8 +17,8 @@
     <tag k='location' v='underground' />
     <tag k='power' v='pole' />
   </node>
-  <node id='25880' timestamp='2025-04-24T15:00:00Z' version='1' lat='46.19018976738' lon='4.47730911825'>
-    <tag k='line_management' v='branch' />
+  <node id='25880' action='modify' timestamp='2025-04-24T15:00:00Z' version='1' lat='46.19018976738' lon='4.47730911825'>
+    <tag k='note' v='Should NOT raise class 8 warning line_management suggestion: below 50 kV' />
     <tag k='power' v='pole' />
   </node>
   <node id='25881' timestamp='2025-04-24T15:00:00Z' version='1' lat='46.19025116596' lon='4.47738773173'>