HERE Maps API - How to calculate a route between two points

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Collandres - Re: How to calculate a route between two points

Hello, I'm trying to calculate a route between two (or more) points by using the address of the cities I want to add to the itinerary. After the initialization of the search.Managers I made a "SEARCH3.maxResults=1;" in order to have just one point per search so the itinerary may be found. I'm having a lot of troubles with the waypoints.addLocation and waypoints.addPlace functions, my code is :

                                               var SEARCH1 = new ovi.mapsapi.search.Manager();

var SEARCH2 = new ovi.mapsapi.search.Manager(); SEARCH1.maxResults=1; SEARCH2.maxResults=1; adr1 = "Paris"; adr2 = "Dijon"; SEARCH1.placeSearch("\'"+adr1+"\'"); SEARCH2.placeSearch("\'"+adr2+"\'");

var router = new ovi.mapsapi.routing.Manager(); //create waypoints var waypoints = new ovi.mapsapi.routing.WaypointParameterList(); waypoints.addPlace(SEARCH1.places[0]); waypoints.addPlace(SEARCH2.places[0]); var modes = [{ type: "shortest", transportModes: ["car"], options: "avoidTollroad", trafficMode: "default" }];

var onRouteCalculated = function(observedRouter, key, value){ if (value == "finished") { var routes = observedRouter.getRoutes(); var mapRoute = new ovi.mapsapi.routing.component.RouteResultSet(routes[0]).container; map.objects.add(mapRoute); map.zoomTo(mapRoute.getBoundingBox(), false, "default"); } else if (value == "failed") { alert("The routing request failed."); } };

//add the observer function to the router\'s "state" property router.addObserver("state", onRouteCalculated);

//calculate the route (and call onRouteCalculated afterwards) router.calculateRoute(waypoints, modes);

In this case I would like a route from Paris to Dijon as you can see, a little help would be very usefull! Thanks,

Andrés

collandres 15:24, 27 June 2011 (EEST)

Avnee.nathani - Article rename

I've updated the article to Nokia Maps Javascript API v2.0 - updated/ added new code, added screenshot, removed broken links, rebranded to 'Nokia Maps', etc. The article needs to be renamed to Nokia Maps API - How to...

Thanks!

avnee.nathani 12:34, 31 December 2011 (EET)

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This article explains how to geo-code two locations and show the route between them using HERE Maps (providing that a valid route can be found).

Article Metadata

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Tested with

Devices(s): Internet Explorer, Google chrome, Firefox, Opera

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Compatibility

Platform(s): Web browser

Dependencies: HERE Maps 2.2.4

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Article

Keywords: HERE Maps, JavaScript, routing

Created: Maveric (21 Jun 2011)

Updated: avnee.nathani (31 Dec 2011)

Last edited: jasfox (24 Apr 2013)

See Also

• HERE Maps API
• HERE Maps API - Advanced Routing
• A to B routing example

Prerequisites

HERE Maps API supported web browser (basically any modern web browser)

Important note about maps credentials

Nokia provides several services options within the Maps API offering. The service is free to use, but you must obtain and use authentication and authorization credentials to use the services. Please read the Terms and Conditions and check the Pricing Plans page to decide which business model best fits your needs. Authentication requires unique Maps API credentials, namely an AppId and a token. You can get these credentials free for free following the instructions here

Implementation

In this example we will define two waypoints for the route; the geographical location of Berlin, Germany to the one of Paris, France. To be able to use routing we need to initialize a new nokia.maps.routing.Manager. We will cast the waypoints to it with some additional parameters. We want the shortest route with car and no toll roads with avoidTollroad, plus having the trafficMode set to default.

Example code

This example has all the required HTML and JavaScript code to perform the routing between Berlin, Germany and Paris, France. Remember to add in your own AppId and Token.

Note: In order to use routing services, the with parameter of the script element's src attribute must be set to ?with=all

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
       <title>A to B Routing Example</title>
       <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
       <script type="text/javascript"
            src="http://api.maps.nokia.com/2.2.4/jsl.js?with=all" charset="utf-8">
        </script>
    </head>
    <body>
 
        <div id="map" style="z-index: -1; left:0px; top:0px; width: 100%; height: 80%; position: absolute;"></div>
        <script type="text/javascript">
/////////////////////////////////////////////////////////////////////////////////////
// Don't forget to set your API credentials
//
// Replace with your appId and token which you can obtain when you 
// register on http://api.developer.nokia.com/ 
//
			nokia.Settings.set( "appId", "YOUR APP ID GOES HERE"); 
			nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");
 
//			
/////////////////////////////////////////////////////////////////////////////////////
 var map;             // Instance of HERE Maps Display
var router;          // New Route search
var geoloc;          // New Geocoding search
 
//Define waypoints for the Routing
var waypoints = new nokia.maps.routing.WaypointParameterList();
 
waypoints.addCoordinate( new nokia.maps.geo.Coordinate(52.500556, 13.398889));  // Berlin, Germany
waypoints.addCoordinate( new nokia.maps.geo.Coordinate(48.856667, 2.350833));   // Paris, France
 
//Define Routing parameters
 
var modes = [{    
    type: "shortest",
    transportModes: ["car"],
    options: "avoidTollroad",
    trafficMode: "default"
}];
 
 
map = new nokia.maps.map.Display(document.getElementById("map"), 
{
 
    components: [ new nokia.maps.map.component.Behavior(),
                new nokia.maps.map.component.ZoomBar(),
                new nokia.maps.map.component.Overview(),                             
                new nokia.maps.map.component.TypeSelector(),     
                new nokia.maps.map.component.ScaleBar()],
    'zoomLevel': 3, 
});
 
 
    router = new nokia.maps.routing.Manager();  //create a route manager
    //    map.addListener("dblclick", eventListener);
 
  //onRouteCalculated will be called when a route was calculated
 var onRouteCalculated = function(observedRouter, key, value){
    if (value == "finished") {
        var routes = observedRouter.getRoutes();
 
        //create the default map representation of a route
        var mapRoute = new nokia.maps.routing.component.RouteResultSet(routes[0]).container; //first option found
        map.objects.add(mapRoute);
 
        //Zoom to the bounding box of the route
        map.zoomTo(mapRoute.getBoundingBox(), false, "default");
    } else if(value == "failed") {
        alert("The routing request failed.");
    }
};
 
//add the observer function to the router's "state" property
router.addObserver("state", onRouteCalculated);
 
//calculate the route (and call onRouteCalculated afterwards)
router.calculateRoute(waypoints, modes);
</script>
</body>
</html>

Screenshot

For more on the HERE Maps API

Please check out the HERE Maps API full documentation and API reference here:

• HERE Maps API

You may also access the interactive API explorer

• API explorer