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use bbox of geometry when searching for attached streets

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As we are doing a distance search, this improves results for
large places like airports.

Fixes #1442.
This commit is contained in:
Sarah Hoffmann
2019-07-28 13:28:27 +02:00
parent 4a2c9431ee
commit 2bbe5017d4
4 changed files with 44 additions and 6 deletions
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6
sql/functions.sql
View File

@@ -1286,7 +1286,7 @@ BEGIN
-- cheaper but less acurate
place_centroid := ST_PointOnSurface(NEW.geometry);
-- For searching near features rather use the centroid
near_centroid := ST_Centroid(NEW.geometry);
near_centroid := ST_Envelope(NEW.geometry);
NEW.centroid := null;
NEW.postcode := null;
--DEBUG: RAISE WARNING 'Computing preliminary centroid at %',ST_AsText(place_centroid);
@@ -1521,7 +1521,7 @@ BEGIN
NEW.postcode := location.postcode;
END IF;
IF NEW.postcode is null THEN
NEW.postcode := get_nearest_postcode(NEW.country_code, near_centroid);
NEW.postcode := get_nearest_postcode(NEW.country_code, NEW.geometry);
END IF;
END IF;
@@ -1791,7 +1791,7 @@ BEGIN
CASE WHEN NEW.rank_search >= 26
AND NEW.rank_search < 30
THEN NEW.geometry
ELSE near_centroid END,
ELSE place_centroid END,
search_maxrank, isin_tokens)
LOOP
IF location.rank_address != location_rank_search THEN

4
sql/partition-functions.src.sql
View File

@@ -95,7 +95,7 @@ BEGIN
ST_Distance(centroid, point) as distance, null as isguess
FROM search_name_-partition-
WHERE name_vector && isin_token
AND ST_DWithin(centroid, point, 0.015)
AND centroid && ST_Expand(point, 0.015)
AND search_rank between 26 and 27
ORDER BY distance ASC limit 1
LOOP
@@ -123,7 +123,7 @@ BEGIN
ST_Distance(centroid, point) as distance, null as isguess
FROM search_name_-partition-
WHERE name_vector && isin_token
AND ST_DWithin(centroid, point, 0.04)
AND centroid && ST_Expand(point, 0.04)
AND search_rank between 16 and 22
ORDER BY distance ASC limit 1
LOOP