An example that uses the OpeNER Tour-pedia APIs and Google Maps API to display all the places in Isola d'Elba as a dot density map. Color is used to distinguish among the four categories to which a place can belong.
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<html>
<head>
<meta charset="utf-8">
<meta name="description" content="OpeNER - Places with categories (GMaps)" />
<title>OpeNER - Places with categories (GMaps)</title>
<link rel="stylesheet" href="index.css">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="https://maps.google.com/maps/api/js?sensor=false"></script>
</head>
<body>
<div id="mapcanvas" style="height: 500px; width: 960px"></div>
<script src="index.js"></script>
</body>
</html>
Modified http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js to a secure url
Modified http://maps.google.com/maps/api/js?sensor=false to a secure url
https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js
https://maps.google.com/maps/api/js?sensor=false