polyline-rs 1.1.0

Fast Google Encoded Polyline encoding & decoding in Rust

polyline-rs

Fast Google Encoded Polyline encoding & decoding in Rust. A Python PyO3 library with out-of-the-box support for both (lat, lon) and (lon, lat) coordinates.

Encoded Polyline Algorithm Format

Installation

The recommended installation method is through the PyPI package manager. The project is implemented in Rust and several pre-built binary wheels are available for Linux, macOS, and Windows, with support for both x64 and ARM architectures.

pip install polyline-rs

Basic usage

from polyline_rs import encode_latlon, encode_lonlat, decode_latlon, decode_lonlat

line = encode_latlon([(38.5, -120.2), (40.7, -120.95), (43.252, -126.453)], 5)
assert line == "_p~iF~ps|U_ulLnnqC_mqNvxq`@"

coords = decode_latlon(line, 5)
assert coords == [(38.5, -120.2), (40.7, -120.95), (43.252, -126.453)]

coords2 = decode_lonlat(line, 5)
assert coords2 == [(-120.2, 38.5), (-120.95, 40.7), (-126.453, 43.252)]