Convert FinBIF named places file (line transects) into geojson

process-named-places.py

import json

def process_geojson_with_properties(input_filename, output_filename):
    # Load the JSON file
    with open(input_filename, "r") as file:
        data = json.load(file)

    # Extract all items under "results"
    results = data.get("results", [])

    features = []

    # Loop through each item in results
    for result in results:
        # Extract the desired path
        gatherings = result.get("acceptedDocument", {}).get("gatherings", [])
        result_id = result.get("id", "")
        result_name = result.get("name", "")

        master_linestring = []

        # Loop through each item in the gatherings list
        for gathering in gatherings:
            geometry = gathering.get("geometry", {})
            if geometry.get("type") == "LineString":
                master_linestring.extend(geometry.get("coordinates", []))

        # Create a GeoJSON structure for the master linestring
        feature = {
            "type": "Feature",
            "geometry": {
                "type": "LineString",
                "coordinates": master_linestring
            },
            "properties": {
                "id": result_id,
                "name": result_name
            }
        }
        features.append(feature)

    geojson_data = {
        "type": "FeatureCollection",
        "features": features
    }

    # Save the GeoJSON data to a file
    with open(output_filename, "w") as file:
        json.dump(geojson_data, file)

# Re-process the named-places-multiple.json file with the modified function
process_geojson_with_properties("named-places.json", "routes.geojson")