place.py 文件源码

def chunk(self):
        chunk_size = utils.calc_chunk_size(self.area_in_sq_km)
        chunks = self.chunk_n(chunk_size)

        print('chunk size:', chunk_size)

        files = []
        for num, chunk in enumerate(chunks):
            filename = self.chunk_filename(num, len(chunks))
            # print(num, q.count(), len(tags), filename, list(tags))
            full = os.path.join('overpass', filename)
            files.append(full)
            if os.path.exists(full):
                continue
            oql = self.oql_for_chunk(chunk, include_self=(num == 0))

            r = overpass.run_query_persistent(oql)
            if not r:
                print(oql)
            assert r
            open(full, 'wb').write(r.content)

        cmd = ['osmium', 'merge'] + files + ['-o', self.overpass_filename]
        print(' '.join(cmd))
        subprocess.run(cmd)