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HERE Maps API - How to draw a circle

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Line 117: Line 117:
  
 
You may also access the interactive Nokia Maps API playground,
 
You may also access the interactive Nokia Maps API playground,
* http://api.maps.nokia.com/2.1.0/playground/index.html
+
* http://api.maps.nokia.com/en/playground/env/nojs/
  
 
==Tested with==
 
==Tested with==

Revision as of 16:33, 13 April 2012

This article explains how to draw a circle on Nokia Maps.

Article Metadata
Tested with
Devices(s): Internet Explorer, Firefox, Google Chrome, Safari
Compatibility
Platform(s): Web browser
Dependencies: Nokia Maps 2.2.0
Article
Created: Maveric (21 Jun 2011)
Updated: avnee.nathani (31 Dec 2011)
Last edited: jasfox (13 Apr 2012)

Contents

Prerequisites

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

Important note about maps credentials

Nokia provides several services options within the Maps API offering. The service is free to use, but you must obtain and use authentication and authorization credentials to use the services. 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 free 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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Circle</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript"
src="http://api.maps.nokia.com/2.2.0/jsl.js" charset="utf-8">
</script>
</head>
<body>
 
<div id="mapContainer" style="z-index: -1; left:0px; top:0px; width: 100%; height: 80%; position: absolute;"></div>
<script type="text/javascript">
/////////////////////////////////////////////////////////////////////////////////////
// Don't forget to set your API credentials
//
// Replace with your appId and token which you can obtain when you
// register on http://api.developer.nokia.com/
//
nokia.Settings.set( "appId", "YOUR APP ID GOES HERE");
nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");
 
//
/////////////////////////////////////////////////////////////////////////////////////
 
var map= new nokia.maps.map.Display(document.getElementById("mapContainer"), // 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
182 page views in the last 30 days.

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