From a8b023e57eda06bac3e5641f85f718e1d3104fe9 Mon Sep 17 00:00:00 2001
From: Sarah Hoffmann <lonvia@denofr.de>
Date: Sun, 26 Nov 2023 17:41:29 +0100
Subject: [PATCH] restrict base results in near search by rank
This avoids in particular that roads or POIs are used as base
for the near search when a place result is present.
---
nominatim/api/search/db_searches.py | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/nominatim/api/search/db_searches.py b/nominatim/api/search/db_searches.py
index 10f1e3b4..ce5fbc63 100644
--- a/nominatim/api/search/db_searches.py
+++ b/nominatim/api/search/db_searches.py
@@ -256,9 +256,20 @@ class NearSearch(AbstractSearch):
base.sort(key=lambda r: (r.accuracy, r.rank_search))
max_accuracy = base[0].accuracy + 0.5
+ if base[0].rank_address == 0:
+ min_rank = 0
+ max_rank = 0
+ elif base[0].rank_address < 26:
+ min_rank = 1
+ max_rank = min(25, base[0].rank_address + 4)
+ else:
+ min_rank = 26
+ max_rank = 30
base = nres.SearchResults(r for r in base if r.source_table == nres.SourceTable.PLACEX
and r.accuracy <= max_accuracy
- and r.bbox and r.bbox.area < 20)
+ and r.bbox and r.bbox.area < 20
+ and r.rank_address >= min_rank
+ and r.rank_address <= max_rank)
if base:
baseids = [b.place_id for b in base[:5] if b.place_id]
--
2.39.5