58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
import argparse
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from shapely import unary_union
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from shapely.geometry import MultiPolygon, Polygon
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from subways.validation import DEFAULT_CITIES_INFO_URL, get_cities_info
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def make_disjoint_metro_polygons(cities_info_url: str) -> None:
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"""Make disjoint polygon from cities bboxes and write them
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in *.poly format to stdout.
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"""
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cities_info = get_cities_info(cities_info_url)
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polygons = []
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for ci in cities_info:
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bbox = tuple(map(float, ci["bbox"].split(",")))
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polygon = Polygon(
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[
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(bbox[0], bbox[1]),
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(bbox[0], bbox[3]),
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(bbox[2], bbox[3]),
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(bbox[2], bbox[1]),
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]
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)
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polygons.append(polygon)
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union = unary_union(polygons)
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if union.geom_type == "Polygon":
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union = MultiPolygon([union])
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print("all metro")
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for i, polygon in enumerate(union.geoms, start=1):
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assert len(polygon.interiors) == 0
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print(i)
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for lon, lat in polygon.exterior.coords:
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print(f" {lon} {lat}")
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print("END")
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print("END")
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def main() -> None:
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parser = argparse.ArgumentParser()
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parser.add_argument(
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"--cities-info-url",
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default=DEFAULT_CITIES_INFO_URL,
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help=(
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"URL of CSV file with reference information about rapid transit "
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"networks. file:// protocol is also supported."
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),
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)
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options = parser.parse_args()
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make_disjoint_metro_polygons(options.cities_info_url)
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if __name__ == "__main__":
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main()
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