How to Add Marker to Open Layer Map?

Question

I want to show map to my website use OpenStreetMap using library open layer. When I want to add marker, I want to add a marker but the marker does not show up on the map.

I had searched on google, I had found one code as below my code. There are much example to add marker but its dominate for google map, I want to use opensource map

 <!doctype html>
 <html lang="en">
   <head>
     <link rel="stylesheet" 
 href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/ css/ol.css" type="text/css">
     <style>
       .map {
        height: 400px;
        width: 100%;
      }
    </style>
    <script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
    <title>OpenLayers example</title>
  </head>
  <body>
    <h2>My Map</h2>
    <div id="map" class="map"></div>
    <script type="text/javascript">

///SHOW MAP
      var map = new ol.Map({
        target: 'map',
        layers: [
          new ol.layer.Tile({
            source: new ol.source.OSM()
          })
        ],
        view: new ol.View({
          center: ol.proj.fromLonLat([106.8478695, -6.1568562]),
          zoom: 17
        })
      });
///ADD MARKER
    var markers = new OpenLayers.Layer.Markers( "Markers" );
    map.addLayer(markers);

    var size = new OpenLayers.Size(21,25);
    var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
    var icon = new OpenLayers.Icon('marker.png', size, offset);
    markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695,-6.1568562),icon));
    markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695,-6.1568562),icon.clone()));

    </script>
    </body>
    </html>

code snippet:

///SHOW MAP
var map = new ol.Map({
  target: 'map',
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    })
  ],
  view: new ol.View({
    center: ol.proj.fromLonLat([106.8478695, -6.1568562]),
    zoom: 17
  })
});
///ADD MARKER
var markers = new OpenLayers.Layer.Markers("Markers");
map.addLayer(markers);

var size = new OpenLayers.Size(21, 25);
var offset = new OpenLayers.Pixel(-(size.w / 2), -size.h);
var icon = new OpenLayers.Icon('marker.png', size, offset);
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695, -6.1568562), icon));
markers.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(106.8478695, -6.1568562), icon.clone()));

.map {
  height: 400px;
  width: 100%;
}

<link rel="stylesheet" href="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/ css/ol.css" type="text/css">
<script src="https://cdn.rawgit.com/openlayers/openlayers.github.io/master/en/v5.3.0/build/ol.js"></script>
<title>OpenLayers example</title>
<h2>My Map</h2>
<div id="map" class="map"></div>

I expect the marker show up on the map, but i dont see the marker

Mike Mike · Accepted Answer · 2019-04-22T10:50:48

You are using OpenLayers 2 code to add a marker to an OpenLayers 5 map.

The equivalent code for OpenLayers 3/4/5 is

var markers = new ol.layer.Vector({
  source: new ol.source.Vector(),
  style: new ol.style.Style({
    image: new ol.style.Icon({
      anchor: [0.5, 1],
      src: 'marker.png'
    })
  })
});
map.addLayer(markers);

var marker = new ol.Feature(new ol.geom.Point(ol.proj.fromLonLat([106.8478695, -6.1568562])));
markers.getSource().addFeature(marker);

How to Add Marker to Open Layer Map?

1 Answers