371 lines
14 KiB
Python
371 lines
14 KiB
Python
'''
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reverse_geocoder.py
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-------------------
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In-memory reverse geocoder using polygons from Quattroshapes or OSM.
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This should be useful for filling in the blanks both in constructing
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training data from OSM addresses and for OpenVenues.
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Usage:
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python reverse_geocode.py -o /data/quattroshapes/rtree/reverse -q /data/quattroshapes/
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python reverse_geocode.py -o /data/quattroshapes/rtree/reverse -a /data/osm/planet-admin-borders.osm
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'''
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import argparse
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import logging
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import os
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import sys
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from functools import partial
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this_dir = os.path.realpath(os.path.dirname(__file__))
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sys.path.append(os.path.realpath(os.path.join(os.pardir, os.pardir)))
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from geodata.encoding import safe_decode
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from geodata.osm.osm_admin_boundaries import OSMAdminPolygonReader
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from geodata.polygons.index import *
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decode_latin1 = partial(safe_decode, encoding='latin1')
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def str_id(v):
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v = int(v)
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if v <= 0:
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return None
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return str(v)
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class QuattroshapesReverseGeocoder(RTreePolygonIndex):
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COUNTRIES_FILENAME = 'qs_adm0.shp'
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ADMIN1_FILENAME = 'qs_adm1.shp'
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ADMIN1_REGION_FILENAME = 'qs_adm1_region.shp'
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ADMIN2_FILENAME = 'qs_adm2.shp'
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ADMIN2_REGION_FILENAME = 'qs_adm2_region.shp'
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LOCAL_ADMIN_FILENAME = 'qs_localadmin.shp'
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LOCALITIES_FILENAME = 'qs_localities.shp'
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NEIGHBORHOODS_FILENAME = 'qs_neighborhoods.shp'
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COUNTRY = 'adm0'
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ADMIN1 = 'adm1'
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ADMIN1_REGION = 'adm1_region'
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ADMIN2 = 'adm2'
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ADMIN2_REGION = 'adm2_region'
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LOCAL_ADMIN = 'localadmin'
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LOCALITY = 'locality'
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NEIGHBORHOOD = 'neighborhood'
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sorted_levels = (COUNTRY,
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ADMIN1_REGION,
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ADMIN1,
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ADMIN2_REGION,
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ADMIN2,
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LOCAL_ADMIN,
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LOCALITY,
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NEIGHBORHOOD,
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)
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sort_levels = {k: i for i, k in enumerate(sorted_levels)}
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NAME = 'name'
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CODE = 'code'
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LEVEL = 'level'
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GEONAMES_ID = 'geonames_id'
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WOE_ID = 'woe_id'
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polygon_properties = {
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COUNTRIES_FILENAME: {
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NAME: ('qs_a0', safe_decode),
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CODE: ('qs_iso_cc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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ADMIN1_FILENAME: {
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NAME: ('qs_a1', safe_decode),
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CODE: ('qs_a1_lc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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ADMIN1_REGION_FILENAME: {
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NAME: ('qs_a1r', safe_decode),
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CODE: ('qs_a1r_lc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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ADMIN2_FILENAME: {
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NAME: ('qs_a2', decode_latin1),
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CODE: ('qs_a2_lc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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ADMIN2_REGION_FILENAME: {
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NAME: ('qs_a2r', safe_decode),
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CODE: ('qs_a2r_lc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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LOCAL_ADMIN_FILENAME: {
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NAME: ('qs_la', safe_decode),
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CODE: ('qs_la_lc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str_id),
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WOE_ID: ('qs_woe_id', str_id),
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},
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LOCALITIES_FILENAME: {
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NAME: ('qs_loc', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('qs_gn_id', str),
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WOE_ID: ('qs_woe_id', str),
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},
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NEIGHBORHOODS_FILENAME: {
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NAME: ('name', safe_decode),
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CODE: ('name_en', safe_decode),
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LEVEL: ('qs_level', safe_decode),
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GEONAMES_ID: ('gn_id', str_id),
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WOE_ID: ('woe_id', str_id),
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}
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}
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@classmethod
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def create_from_shapefiles(cls,
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input_files,
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output_dir,
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index_filename=DEFAULT_INDEX_FILENAME,
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polys_filename=DEFAULT_POLYS_FILENAME):
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index = cls(save_dir=output_dir, index_filename=index_filename)
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i = 0
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for input_file in input_files:
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f = fiona.open(input_file)
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filename = os.path.split(input_file)[-1]
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include_props = cls.polygon_properties.get(filename)
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for rec in f:
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if not rec or not rec.get('geometry') or 'type' not in rec['geometry']:
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continue
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properties = rec['properties']
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if filename == cls.NEIGHBORHOODS_FILENAME:
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properties['qs_level'] = 'neighborhood'
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if include_props:
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have_all_props = False
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for k, (prop, func) in include_props.iteritems():
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v = properties.get(prop, None)
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if v is not None:
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try:
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properties[k] = func(v)
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except Exception:
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break
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else:
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have_all_props = True
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if not have_all_props or not properties.get(cls.NAME):
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continue
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poly_type = rec['geometry']['type']
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if poly_type == 'Polygon':
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poly = Polygon(rec['geometry']['coordinates'][0])
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index.index_polygon(i, poly)
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poly = index.simplify_polygon(poly)
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index.add_polygon(poly, dict(rec['properties']), include_only_properties=include_props)
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elif poly_type == 'MultiPolygon':
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polys = []
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for coords in rec['geometry']['coordinates']:
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poly = Polygon(coords[0])
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polys.append(poly)
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index.index_polygon(i, poly)
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multi_poly = index.simplify_polygon(MultiPolygon(polys))
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index.add_polygon(multi_poly, dict(rec['properties']), include_only_properties=include_props)
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else:
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continue
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i += 1
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return index
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@classmethod
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def create_with_quattroshapes(cls, quattroshapes_dir,
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output_dir,
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index_filename=DEFAULT_INDEX_FILENAME,
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polys_filename=DEFAULT_POLYS_FILENAME):
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admin0_filename = os.path.join(quattroshapes_dir, cls.COUNTRIES_FILENAME)
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admin1_filename = os.path.join(quattroshapes_dir, cls.ADMIN1_FILENAME)
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admin1r_filename = os.path.join(quattroshapes_dir, cls.ADMIN1_REGION_FILENAME)
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admin2_filename = os.path.join(quattroshapes_dir, cls.ADMIN2_FILENAME)
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admin2r_filename = os.path.join(quattroshapes_dir, cls.ADMIN2_REGION_FILENAME)
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local_admin_filename = os.path.join(quattroshapes_dir, cls.LOCAL_ADMIN_FILENAME)
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localities_filename = os.path.join(quattroshapes_dir, cls.LOCALITIES_FILENAME)
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neighborhoods_filename = os.path.join(quattroshapes_dir, cls.NEIGHBORHOODS_FILENAME)
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return cls.create_from_shapefiles([admin0_filename, admin1_filename, admin1r_filename,
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admin2_filename, admin2r_filename, local_admin_filename,
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localities_filename, neighborhoods_filename],
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output_dir, index_filename=index_filename,
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polys_filename=polys_filename)
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def sort_level(self, i):
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props, p = self.polygons[i]
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return self.sort_levels.get(props[self.LEVEL], 0)
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def get_candidate_polygons(self, lat, lon):
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candidates = OrderedDict.fromkeys(self.index.intersection((lon, lat, lon, lat))).keys()
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return sorted(candidates, key=self.sort_level, reverse=True)
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class OSMReverseGeocoder(RTreePolygonIndex):
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include_property_patterns = set([
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'name',
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'name:*',
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'int_name',
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'official_name',
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'official_name:*',
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'short_name',
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'short_name:*',
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'admin_level',
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'wikipedia',
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'wikipedia:*',
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])
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@classmethod
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def fix_polygon(cls, poly):
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'''
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Coerce to valid polygon
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'''
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if not poly.is_valid:
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poly = poly.buffer(0)
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if not poly.is_valid:
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return None
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return poly
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@classmethod
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def to_polygon(cls, coords):
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'''
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Create shapely polygon from list of coordinate tuples if valid
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'''
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if not coords or len(coords) < 3:
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return None
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poly = Polygon(coords)
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return cls.fix_polygon(poly)
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@classmethod
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def create_from_osm_file(cls, filename, output_dir,
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index_filename=DEFAULT_INDEX_FILENAME,
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polys_filename=DEFAULT_POLYS_FILENAME):
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'''
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Given an OSM file (planet or some other bounds) containing relations
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and their dependencies, create an R-tree index for coarse-grained
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reverse geocoding.
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Note: the input file is expected to have been created using
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osmfilter. Use fetch_osm_address_data.sh for planet or copy the
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admin borders commands if using other geometries.
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'''
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index = cls(save_dir=output_dir, index_filename=index_filename)
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reader = OSMAdminPolygonReader(filename)
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polygons = reader.polygons()
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handler = logging.StreamHandler(sys.stderr)
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reader.logger.addHandler(handler)
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reader.logger.setLevel(logging.INFO)
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polygon_index = 0
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for relation_id, props, outer_polys, inner_polys in polygons:
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props = {k: v for k, v in props.iteritems() if k in cls.include_property_patterns
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or (':' in k and '{}:*'.format(k.split(':', 1)[0]) in cls.include_property_patterns)}
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if inner_polys and not outer_polys:
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self.logger.warn('inner polygons with no outer')
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continue
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if len(outer_polys) == 1 and not inner_polys:
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poly = cls.to_polygon(outer_polys[0])
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if poly is None or not poly.bounds or len(poly.bounds) != 4:
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continue
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if poly.type != 'MultiPolygon':
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index.index_polygon(polygon_index, poly)
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else:
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for p in poly:
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index.index_polygon(polygon_index, p)
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else:
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multi = []
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inner = []
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# Validate inner polygons (holes)
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for p in inner_polys:
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poly = cls.to_polygon(p)
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if poly is None or not poly.bounds or len(poly.bounds) != 4:
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continue
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if poly.type != 'MultiPolygon':
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inner.append(poly)
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else:
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inner.extend(poly)
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# Validate outer polygons
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for p in outer_polys:
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poly = cls.to_polygon(p)
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if poly is None or not poly.bounds or len(poly.bounds) != 4:
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continue
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# Figure out which outer polygon contains each inner polygon
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interior = [p2 for p2 in inner if poly.contains(p2)]
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if interior:
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# Polygon with holes constructor
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poly = Polygon(p, [zip(*p2.exterior.coords.xy) for p2 in interior])
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poly = cls.fix_polygon(poly)
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if poly is None or not poly.bounds or len(poly.bounds) != 4:
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continue
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# R-tree only stores the bounding box, so add the whole polygon
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if poly.type != 'MultiPolygon':
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index.index_polygon(polygon_index, poly)
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multi.append(poly)
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else:
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for p in poly:
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index.index_polygon(polygon_index, p)
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multi.extend(poly)
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if len(multi) > 1:
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poly = MultiPolygon(multi)
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elif multi:
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poly = multi[0]
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else:
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continue
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poly = index.simplify_polygon(poly)
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index.add_polygon(poly, props)
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# Even if this is a MultiPolygon, only increment the id once per relation
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polygon_index += 1
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return index
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if __name__ == '__main__':
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# Handle argument parsing here
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parser = argparse.ArgumentParser()
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parser.add_argument('-q', '--quattroshapes-dir',
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help='Path to quattroshapes dir')
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parser.add_argument('-a', '--osm-admin-file',
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help='Path to OSM borders file (with dependencies, .osm format)')
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parser.add_argument('-o', '--out-dir',
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default=os.getcwd(),
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help='Output directory')
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args = parser.parse_args()
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if args.quattroshapes_dir:
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index = QuattroshapesReverseGeocoder.create_with_quattroshapes(args.quattroshapes_dir, args.out_dir)
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elif args.osm_admin_file:
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index = OSMReverseGeocoder.create_from_osm_file(args.osm_admin_file, args.out_dir)
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else:
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parser.error('Must specify quattroshapes dir or osm admin borders file')
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index.save()
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