56 lines
1.8 KiB
Bash
Executable file
56 lines
1.8 KiB
Bash
Executable file
#!/usr/bin/env nix-shell
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#! nix-shell -i python3 -p python3 python3Packages.requests python3Packages.shapely
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import requests
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import json
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from collections import defaultdict
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from shapely.geometry import shape, mapping
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from shapely.ops import unary_union
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# https://services.arcgis.com/9OIuDHbyhmH91RfZ/arcgis/rest/services/EMSRB_Statewide/FeatureServer/0/query?f=pbf&cacheHint=true&maxRecordCountFactor=4&resultOffset=0&resultRecordCount=8000&where=1%3D1&orderByFields=OBJECTID%20ASC&outFields=AmbServNam%2CCounty%2COBJECTID&outSR=102100&spatialRel=esriSpatialRelIntersects
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url = "https://services.arcgis.com/9OIuDHbyhmH91RfZ/arcgis/rest/services/EMSRB_Statewide/FeatureServer/0/query"
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params = {
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"f": "geojson",
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"cacheHint": "true",
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"maxRecordCountFactor": "4",
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"resultOffset": "0",
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"resultRecordCount": "8000",
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"where": "1=1",
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"outFields": "AmbServNam,County",
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"outSR": "102100",
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"spatialRel": "esriSpatialRelIntersects",
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}
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response = requests.get(url, params=params)
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response.raise_for_status()
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data = json.loads(response.text)
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services = defaultdict(list)
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for feature in data["features"]:
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service_name = feature["properties"].get("AmbServNam", "Unknown")
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services[service_name].append(feature)
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merged_features = []
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for service_name, features in services.items():
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merged_features.append(
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{
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"type": "Feature",
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"properties": {
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"AmbServNam": service_name,
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},
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"geometry": mapping(unary_union([shape(feature["geometry"]) for feature in features])),
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}
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)
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merged_data = {
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"type": "FeatureCollection",
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"crs": {"type": "name", "properties": {"name": "EPSG:3857"}},
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"features": merged_features,
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}
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with open("mn-ambulance-service-areas.geojson", "w", encoding="utf-8") as f:
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json.dump(merged_data, f)
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