Revision as of 17:10, 11 January 2012 by jasfox (Talk | contribs)

HERE Maps API - Create map markers from XML data

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This article explains how to read a structured XML file and create map markers based on the data.

Article Metadata
Code ExampleTested with
Devices(s): Opera 5.0.5 & Firefox 5.0
Platform(s): Web browser
Dependencies: Nokia Maps 2.1.0
Keywords: Nokia Maps, jQuery, JavaScript, KML
Created: Maveric (27 Jun 2011)
Updated: jasfox (31 Dec 2011)
Last edited: jasfox (11 Jan 2012)



Sometimes it would be useful to have the data for map, e.g. for markers, to reside on a separate file. In this article, an example is presented, using which you can yourself utilize a separate XML file for creating map content. The example will use Javascript and jQuery.


  • Nokia Maps API supported web browser (basically any modern web browser).
  • JQuery downloaded and installed.
  • Change the directory names for your own version of the example, if needed.

Example code

Note that the example code - Media:Markersxml.zip - leaves you room to implement your own infoBubbles and some other functionality is there if you need it, otherwise you can remove it; for e.g. the behaviour of the map and availability of components. Feel free to copy and modify for your own purposes!


Both the Nokia Maps API for JavaScript and the jQuery library need to be referenced in the header.

<script type="text/javascript" src="http://api.maps.nokia.com/2.0.0/jsl.js" charset="utf-8"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>


The Map is set up in init() the usual manner.

function init(){
// Here we create an Nokia Maps within a Container.
mapContainer = document.getElementById("map");
myInfoBubbles = new nokia.maps.map.component.InfoBubbles();
myMap = nokia.maps.map,
map = new myMap.Display(mapContainer, {
center: [52.59, 13.3], zoomLevel: 10,
components: [ new myMap.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(),
myInfoBubbles ]
// Define the XML filename to read that contains the marker data

When the HTML page body section is loaded the placeMarkersOnMaps function will be called. This function gets passed the marker XML data file name. The location of the XML file is relative to the URL of the html page.

Note.pngNote: Both files must be hosted on a server for this function to work. The err function will fire if the file cannot be accessed.

function placeMarkersOnMaps(filename) 
var counter = 0;
type: "GET",
url: filename ,
dataType: "xml",
success: parseXml,
error : err
function err (){
alert("An Error has occurred.");

The parseXml function is the meat of the example. It uses standard jQuery parsing to retrieve the elements from the XML file.

function parseXml(xml)
var container = new nokia.maps.map.Container();
//Read the name, address, latitude and longitude for each Marker
var nme = $(this).find('name').text();
var address = $(this).find('address').text();
var lat = $(this).find('lat').text();
var lng = $(this).find('lng').text();
//Put each marker on the map as the data has been read.
var markerCoords = new nokia.maps.geo.Coordinate(parseFloat(lat), parseFloat(lng));
var marker = new nokia.maps.map.StandardMarker(markerCoords, {text:nme});
// Add the marker container .
// Zoom into the markers.
alert("Markers have been loaded. Hit OK to zoom the map into the area covering the markers.");
map.zoomTo(container.getBoundingBox(), false);

Example XML file

The file to be parsed is in the following format - the full XML file can be found in Media:Markersxml.zip

<?xml version="1.0"?>
<address>ADDRESS 1</address>
.... etc


The following screenshot shows how the XML has been parsed


Edit the script and file for your own purposes, hope you find this article useful.

Alternative Solution

Since the latest version of the Nokia Maps API is able to natively render KML files, it would make sense to transform the XML into KML using XSLT. You can copy the markers.xml file from Media:Markersxml.zip into an XSLT Editor and use the the XSLT stylesheet described below.The KML can then be loaded directly onto a map iusing the code from the Nokia Map Playground KML Example.

<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- Edited by XMLSpy® -->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="markers">
<xsl:for-each select="marker">
<name><xsl:value-of select="name"/></name>
<address><xsl:value-of select="address"/></address>
<xsl:value-of select="lat"/>,<xsl:value-of select="lng"/>,0

Tested with

Microsoft XP Pro and the following browsers:

  • Opera 5.0.5 & Firefox 5.0

For more on Nokia Maps API

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

You may also access the interactive Nokia Maps API playground,

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