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ValhallaPY

This is a quick python wrapper for the Valhalla service from MapZen

Instalation

pip install valhallapy

Running

from valhalla import Valhalla

valhalla = Valhalla(host="http://192.168.99.100:5333")

start = {'lat': '', 'lon':''}
end   = {'lat':'', 'lon':''}
route  = valhalla.route(start, end, costing='pedestrian')
print 'that route as %d km long and took %d s ' %(route.distance(), route.time())
print 'GEOJSON %s' % ((route.geoJSON())

Connection

To connect to a server initialize a valhalla object

from valhalla import Valhalla

valhalla = Valhalla(host="http://192.168.99.100:5333", api_key="")

where the api key is optional (get your api keys here if you are running locally. Once you have a connection, request a route by

Get a route

Request a route using the following

  route = valhalla.route(start, end, costing)

where costing can be 'pedestrian', 'auto' etc (full list of costing models).

This returns a ValhallaRoute object which can be interegated for information about the returned route

route.time() # The time in seconds the route will take
route.distance() # The distance in km the route was
route.instructions() # A set of turn by turn instructions for the route
route.geoJSON(parameters=[]) # Return the route as geojson appending extra parameters in the optional parameters argument

To Do

  • refactor
  • create a method to do batches of routes
  • change the route method to allow for multiple waypoints

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Python wrapper for the Valhalla Routing API

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