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mapControl.plotRoute does not return total miles

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    mapControl.plotRoute does not return total miles

    When plotting a route with more than two locations, I would expect that plotRoute() would return the total mileage, including all locations. But it only shows miles from the first to the second location, then from the second to the next, etc.

    I'm not sure if this is a bug, but every other map program I've used returns the total miles. This includes Google Maps.

    I've attached an UX, based on the example in the documentation for mapControl.plotRoute Method

    https://www.alphasoftware.com/docume...e%20method.xml



    MapTest.a5wcmp

    #2
    Re: mapControl.plotRoute does not return total miles

    I have looked into this a little further. As I understand it, Google Maps returns a DirectionsResult object that provides the distance for each leg. It would be up to the requester to extract and then summarize the distance for each leg.

    Here is an example:

    https://stackoverflow.com/questions/...with-waypoints

    http://www.geocodezip.com/v3_GoogleE...totalDist.html


    Is it possible to do this easily in Alpha?

    Code:
    var directionDisplay;
    var directionsService = new google.maps.DirectionsService();
    var map;
    
    function initialize() {
      directionsDisplay = new google.maps.DirectionsRenderer();
      var chicago = new google.maps.LatLng(41.850033, -87.6500523);
      var myOptions = {
        zoom: 6,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        center: chicago
      }
      map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
      directionsDisplay.setMap(map);
      calcRoute();
    }
    google.maps.event.addDomListener(window, 'load', initialize);
    
    function calcRoute() {
    
      var request = {
        // from: Blackpool to: Preston to: Blackburn
        origin: "Blackpool,UK",
        destination: "Blackburn,UK",
        waypoints: [{
          location: "Preston,UK",
          stopover: true
        }],
        optimizeWaypoints: true,
        travelMode: google.maps.DirectionsTravelMode.WALKING
      };
      directionsService.route(request, function(response, status) {
        if (status == google.maps.DirectionsStatus.OK) {
          directionsDisplay.setDirections(response);
          var route = response.routes[0];
          var summaryPanel = document.getElementById("directions_panel");
          summaryPanel.innerHTML = "";
          // For each route, display summary information.
          for (var i = 0; i < route.legs.length; i++) {
            var routeSegment = i + 1;
            summaryPanel.innerHTML += "<b>Route Segment: " + routeSegment + "</b><br />";
            summaryPanel.innerHTML += route.legs[i].start_address + " to ";
            summaryPanel.innerHTML += route.legs[i].end_address + "<br />";
            summaryPanel.innerHTML += route.legs[i].distance.text + "<br /><br />";
          }
          computeTotalDistance(response);
        } else {
          alert("directions response " + status);
        }
      });
    }
    
    function computeTotalDistance(result) {
      var totalDist = 0;
      var totalTime = 0;
      var myroute = result.routes[0];
      for (i = 0; i < myroute.legs.length; i++) {
        totalDist += myroute.legs[i].distance.value;
        totalTime += myroute.legs[i].duration.value;
      }
      totalDist = totalDist / 1000.
      document.getElementById("total").innerHTML = "total distance is: " + totalDist + " km<br>total time is: " + (totalTime / 60).toFixed(2) + " minutes";
    }

    Comment


      #3
      Re: mapControl.plotRoute does not return total miles

      The office opens on the 28th. We have simple code for this.

      I am on holiday and don't have the code on this machine.

      Please remind me on the 27th and I will post it.

      [email protected]

      Comment


        #4
        Re: mapControl.plotRoute does not return total miles

        The distances are all inside the map control... in mapControl1._dirR.directions.routes[0]. There is a array property named legs which contains each leg of the route and all it's information.

        Loop through the legs getting what you need.

        Have a look at the Javascript function named getTotalDistance(). It's run after each of your 2 and 3 Locations code. I've had to put a setTimeout around calling getTotalDistance - not happy about that - but the route isn't available for a bit. I'm not sure if there is a good event that could be used instead... I'm sure something could be done... so you can have a look for that.
        Attached Files

        Comment


          #5
          Re: mapControl.plotRoute does not return total miles

          Thanks David. That is just what I was looking for. I have not found an event that fires after the route is returned. I am running plotRoute after geocoding some locations, and Google Maps does not always successfully geocode. Sometimes it requires several tries. So I can live with the SetTimeout.

          Comment


            #6
            Re: mapControl.plotRoute does not return total miles

            Nice work David
            Insanity: doing the same thing over and over again and expecting different results.
            Albert Einstein, (attributed)
            US (German-born) physicist (1879 - 1955)

            Comment


              #7
              Re: mapControl.plotRoute does not return total miles

              How to change icon marker in plotRoute?

              Comment


                #8
                Re: mapControl.plotRoute does not return total miles

                Falah - You can do this (and I do it both ways) with either a Javascript Action or do it dynamically in Javascript. For an Action, you will have to go to Map Action and then add a marker to the map. It will give you some options. I do that specifically for the device's location. For Javascript you can do something such as:

                Code:
                var marker = new google.maps.Marker(
                {
                	position: result[0].geometry.location,
                	map: googleMap
                });

                Comment

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