Leaflet Routing Machine / GraphHopper
Some brief instructions follow below, but the Leaflet Routing Machine tutorial on alternative routers is recommended.
Go to the releases page to get the script to include in your page. Put the script after Leaflet and Leaflet Routing Machine has been loaded.
To use with for example Browserify:
npm install --save lrm-graphhopper
There's a single class exported by this module,
L.Routing.GraphHopper. It implements the
IRouter interface. Use it to replace Leaflet Routing Machine's default OSRM router implementation:
var L = ;;; // This will tack on the class to the L.Routing namespaceLRouting;
Note that you will need to pass a valid GraphHopper API key to the constructor.
To keep track of the GraphHopper credits consumption, the application may listen to the
response event fired by the Router object. This event holds the values from GraphHopper's response HTTP headers:
status: The HTTP status code (see GraphHopper error codes)
var router = myRoutingControl;router;