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use line interpolation to create centroid for lines

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ST_PointOnSurface always returns one of the vertices of a line.
This means that a two-point line will have the centroid at
one of the ends, which is less then ideal.
This commit is contained in:
Sarah Hoffmann
2024-11-03 17:46:06 +01:00
parent b9e4563beb
commit ad50016c49
3 changed files with 25 additions and 4 deletions
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4
lib-sql/functions/placex_triggers.sql
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@@ -668,7 +668,7 @@ BEGIN
NEW.place_id := nextval('seq_place');
NEW.indexed_status := 1; --STATUS_NEW
NEW.centroid := ST_PointOnSurface(NEW.geometry);
NEW.centroid := get_center_point(NEW.geometry);
NEW.country_code := lower(get_country_code(NEW.centroid));
NEW.partition := get_partition(NEW.country_code);
@@ -870,7 +870,7 @@ BEGIN
END IF;
-- Compute a preliminary centroid.
NEW.centroid := ST_PointOnSurface(NEW.geometry);
NEW.centroid := get_center_point(NEW.geometry);
-- recalculate country and partition
IF NEW.rank_search = 4 AND NEW.address is not NULL AND NEW.address ? 'country' THEN