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HERE Maps API - How to draw a circle

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==Introduction==
 
==Introduction==

Revision as of 02:15, 2 January 2012


Article Metadata
Compatibility
Platform(s): Web browser
Article
Created: Maveric (21 Jun 2011)
Updated: avnee.nathani (31 Dec 2011)
Last edited: hamishwillee (02 Jan 2012)

Contents

Introduction

This article will introduce how to draw a circle on the Nokia Maps.

Prerequisites

Nokia Maps API supported web browser (basically any modern web browser)

Important about Maps credentials

Nokia provides several services options within the Maps API offering. The service is free to use, but if you complete the free registration process and obtain authentication and authorization credentials, your application will have priority access to the service and will thus avoid a potential performance penalty. Please read the Location API Business Models and Usage Restrictions page to decide which business model best fits your needs. Authentication requires unique Maps API credentials, namely an AppId and a token. You can get these credentials from the Nokia Developer API Registration page.

Implementation

The API definition:

new nokia.maps.map.Circle (center, radius, props)

In the example below, we will create new circles with an increasing radius and add them all one by one to the map display in a loop.

Example code

<html>
<head>
<script type="text/javascript"
src="http://api.maps.nokia.com/2.0.0/jsl.js" charset="utf-8">
</script>
</head>
<body>
<div id="map" style="width:100%; height:80%;"></div>
</body>
<script type="text/javascript">
 
 
var map= new nokia.maps.map.Display(document.getElementById("map"), // new instance of
{
 
components: [ new nokia.maps.map.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()],
'zoomLevel': 4,
'center':[19.119, 72.8957]
});
 
draw_Circle();
 
 
function draw_Circle(loop){
map.objects.add(new nokia.maps.map.Circle(
// Place the circle center here
[19.15, 73.91],
// Radius of 8000 meters
4000,
{
color: "#829f",
fillColor: "#2387",
width: 100
}
));
}
 
 
</script>
</body>
</html>

Screenshot

NokiaMapsCircle.png

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,

Tested with

  • Google Chrome 11.0x
  • Mozilla Firefox 5.0
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