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Andras Schmelczer 2026-03-15 17:38:26 +00:00
parent 80c093b7ba
commit f72c43a9fa
101 changed files with 2168 additions and 1177 deletions
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pipeline/utils/england_geometry.py
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@ -1,4 +1,4 @@
"""England boundary polygon for accurate point-in-country filtering.
"""England boundary polygon and bounding box for geographic filtering.
Uses shapely prepared geometry for fast single-point checks (osmium handlers)
and vectorized shapely.contains for batch checks (Polars DataFrames).
@ -12,6 +12,12 @@ import shapely
from shapely.geometry import shape
from shapely.prepared import PreparedGeometry, prep
# Bounding box for fast pre-filtering before the precise polygon check
ENGLAND_BBOX_WEST = -6.45
ENGLAND_BBOX_SOUTH = 49.85
ENGLAND_BBOX_EAST = 1.77
ENGLAND_BBOX_NORTH = 55.82
def load_england_polygon(geojson_path: Path) -> PreparedGeometry:
"""Load England boundary as a prepared shapely polygon for fast contains checks."""