cPyOSRM
A simple (80 lines) C++ binding to use the libosrm API directly in python. Can handle significantly larger requests than the HTTP OSRM API. Zero guarantees made about memory safety, or good C++.
I've been using this personally, but I thought I'd share the pattern for anyone else interested! Currently only implements table,
but other functions can be implemented easily following the same pattern.
Usage:
from PyOSRM import PyOSRM
import numpy as np
osrm = PyOSRM()
lons = [...] # list of float lons
lats = [...] # list of float lats
sources = [...] # list of integer indices into lons/lats to use as sources
dests = [...] # list of integer indices into lons/lats to use as destinations
output = np.array((len(sources),len(dests)),dtype=np.float32)
osrm.table(lons, lats, sources, dests, output)
print(output)
Installation
- Build+Install
libosrm, placeeigen3in include path - Clone
pybind11into directory - Adjust hardcoded osrm routing path in
main.cpp - Adjust python installation path in
cmakelists.txt - Configure + Build + Install with cmake.