I have problem in my markers every time I get request to our server to get the newly location of my devices and updated the position of my markers on the map,when my vehicle devices move,the marker will jump to the newly location and its flickering. How can I avoid this not to flickering,or my Marker can move smoothly.

Thank you in advance.

var map;
var marker;
var markerarray =[];

setInterval(function(){

    $.ajax({
        type: "post",
        url: "vehiclecordinates.php",
        success: function(data){

            coordinates = data.latlng;
            vehiclename = data.vehiclename;

            for (var i = 0; i < coordinates.length; i++) {

                newcoordinate = new google.maps.LatLng(coordinates[i].split(",")[0],coordinates[i].split(",")[1]);
                marker =  new MarkerWithLabel({
                     map:map,
                     labelClass: "mylabels",
                     labelStyle: {opacity: 1.0},
                     labelContent: '<div>'+ vehiclename[i]+'</div>',
                     icon:{
                         //some options here
                     },
                });

                marker.setPosition(newcoordinate);
                markerarray.push(marker);
            }
        }
    });

    setTimeout(function () {
        removeMarkers();
        delete marker;
    }, 1000);
},5000);

function removeMarkers() {
    for(var i = 0; i < markerarray.length; i++) {
        markerarray[i].setMap(null);
    }
}

I have problem in my markers every time I get request to our server to get the newly location of my devices and updated the position of my markers on the map,when my vehicle devices move,the marker will jump to the newly location and its flickering. How can I avoid this not to flickering,or my Marker can move smoothly.

Thank you in advance.

var map;
var marker;
var markerarray =[];

setInterval(function(){

    $.ajax({
        type: "post",
        url: "vehiclecordinates.php",
        success: function(data){

            coordinates = data.latlng;
            vehiclename = data.vehiclename;

            for (var i = 0; i < coordinates.length; i++) {

                newcoordinate = new google.maps.LatLng(coordinates[i].split(",")[0],coordinates[i].split(",")[1]);
                marker =  new MarkerWithLabel({
                     map:map,
                     labelClass: "mylabels",
                     labelStyle: {opacity: 1.0},
                     labelContent: '<div>'+ vehiclename[i]+'</div>',
                     icon:{
                         //some options here
                     },
                });

                marker.setPosition(newcoordinate);
                markerarray.push(marker);
            }
        }
    });

    setTimeout(function () {
        removeMarkers();
        delete marker;
    }, 1000);
},5000);

function removeMarkers() {
    for(var i = 0; i < markerarray.length; i++) {
        markerarray[i].setMap(null);
    }
}

• javascript
• google-maps
• google-maps-api-3

• If you don't want them to flicker, don't "remove" them from the map, update their position. – geocodezip Commented Aug 27, 2014 at 18:39
• but if I will not remove the marker my browser will hang,. – jemz Commented Aug 27, 2014 at 18:44

1 Answer 1

If you don't want them to flicker, don't "remove" them from the map, update their position.

var map;
var marker;
var markerarray =[];

setInterval(function(){
  $.ajax({
    type: "post",
    url: "vehiclecordinates.php",
    success: function(data){
      coordinates = data.latlng;
      vehiclename = data.vehiclename;
      for (var i = 0; i < coordinates.length; i++) {
        newcoordinate = new google.maps.LatLng(coordinates[i].split(",")[0],coordinates[i].split(",")[1]);
        if (markerarray[vehiclename[i]] && markerarray[vehiclename[i]].setPosition){
          markerarray[vehiclename[i]].setPosition(newcoordinate);
        else {
          marker =  new MarkerWithLabel({
            map:map,
            labelClass: "mylabels",
            labelStyle: {opacity: 1.0},
            labelContent: '<div>'+ vehiclename[i]+'</div>',
            icon:{
              //some options here
            }
          });
          marker.setPosition(newcoordinate);
          markerarray[vehiclename[i]] = marker;
        }
      }
    }
  });
},5000);

See example based off the example in this similar question