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#!/usr/bin/env python3 |
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"""Generates GeoJSON to map millage data to parks on OpenStreetMap. |
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Usage: |
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main.py <path> [--verbose] [--debug] |
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Options: |
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--verbose Enable verbose logging. |
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--debug Use a smaller data set to fail faster. |
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""" |
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import sys |
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import csv |
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import json |
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import log |
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from docopt import docopt |
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from parks import reader, finder |
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OUTPUT_CSV = "parks.csv" |
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OUTPUT_OSM_JSON = "parks.osm_json" |
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def main(argv=None): |
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"""Parse arguments and run the program.""" |
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# Parse arguments |
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arguments = docopt(__doc__, argv=argv or sys.argv[1:]) |
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verbose = arguments.get('--verbose') |
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debug = arguments.get('--debug') |
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input_csv_path = arguments['<path>'] |
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# Configure logging |
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log.init(debug=verbose) |
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# Run the program |
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success = run(input_csv_path, OUTPUT_CSV, OUTPUT_OSM_JSON, debug=debug) |
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if not success: |
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sys.exit(1) |
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def run(input_csv_path, output_csv_path, output_osm_json_path, debug=False): |
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"""Merge the input data with OpenStreetMap data.""" |
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success = True |
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# Read the input millage data |
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millage_parks = reader.read(input_csv_path) |
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# Find all parks on OSM |
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osm_points = finder.find(debug=debug) |
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osm_parks = {} |
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for point in osm_points: |
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if point['type'] in ('way', 'relation'): |
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data = point['data'] |
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name = data['tag'].get('name', '<unknown>') |
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osm_parks[name] = data |
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# Display the difference between both park lists |
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for name in millage_parks: |
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if name not in osm_parks: |
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log.warning("missing park on OSM: %s", name) |
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for name in osm_parks: |
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if name not in millage_parks: |
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log.warning("missing park in CSV: %s", name) |
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# Write the relevant OSM data to a flat file |
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log.info("writing %s...", output_csv_path) |
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with open(output_csv_path, 'w', newline='') as csvfile: |
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csvwriter = csv.writer(csvfile) |
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for park in osm_parks.values(): |
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csvwriter.writerow([park['id'], park['tag'].get('name')]) |
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# Generate new OSM JSON parks data with millage information |
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modified_osm_points = [] |
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for point in osm_points: |
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name = point['data']['tag'].get('name') |
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if name: |
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if name not in millage_parks: |
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log.info("skipped untagged: %s", name) |
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continue |
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if point['type'] in ('way', 'relation'): |
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point['data']['tag'] = dict(leisure='park') |
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millage_park_data = millage_parks[name] |
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for key, value in millage_park_data.items(): |
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point['data']['tag'][key.lower()] = value |
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log.info("tags added to park: %s", name) |
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# map to names expected for GeoJSON |
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point2 = {} |
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point2['type'] = point['type'] |
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point2.update(point['data']) |
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point2['nodes'] = point2.pop('nd', {}) |
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point2['tags'] = point2.pop('tag', {}) |
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modified_osm_points.append(point2) |
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# Write the modified OSM data to an OSM JSON file |
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log.info("writing %s...", output_osm_json_path) |
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with open(output_osm_json_path, 'w') as osm_json_file: |
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modified_osm_data = {'elements': modified_osm_points} |
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modified_osm_json = json.dumps(modified_osm_data, indent=' ') |
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osm_json_file.write(modified_osm_json) |
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return success or debug |
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if __name__ == '__main__': |
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main() |
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citizenlabsgr /
grparks
