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don't crash

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This commit is contained in:
Andras Schmelczer 2026-06-04 20:40:42 +01:00
parent aab85fe32e
commit d6d20ccd37
13 changed files with 2630 additions and 3924 deletions
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9
pipeline/transform/postcode_boundaries/voronoi.py
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@ -4,7 +4,8 @@ import numpy as np
from scipy.spatial import QhullError, Voronoi
from shapely import make_valid
from shapely.geometry import MultiPolygon, Polygon
from shapely.ops import unary_union
from .geometry import safe_intersection, safe_union
def compute_voronoi_regions(
@ -111,13 +112,13 @@ def compute_voronoi_regions(
poly = Polygon(vertices)
if not poly.is_valid:
poly = make_valid(poly)
clipped = poly.intersection(boundary)
clipped = safe_intersection(poly, boundary)
if not clipped.is_empty:
pc_polys[unique_pcs[i]].append(clipped)
result = {}
for pc, parts in pc_polys.items():
merged = unary_union(parts)
merged = safe_union(parts)
if not merged.is_empty:
result[pc] = merged
return result
@ -143,7 +144,7 @@ def _equal_split_fallback(
(min_x, strip_max_y),
]
)
clipped = boundary.intersection(strip)
clipped = safe_intersection(boundary, strip)
if not clipped.is_empty:
result[pc] = clipped
return result