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HERE Maps API - How to draw a circle

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[[Category:Ovi]][[Category:Web]][[Category:Browser]]
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[[Category:Nokia Maps]][[Category:Code Snippet]][[Category:JavaScript]][[Category:Nokia Maps]]
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==Introduction==
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{{Abstract|This article explains how to draw a circle on Nokia Maps.}}
  
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This article will introduce how to draw a circle on the Ovi Maps.  
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{{ArticleMetaData
 +
|sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
 +
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
 +
|devices= Internet Explorer, Firefox, Google Chrome, Safari
 +
|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
 +
|platform= Web browser
 +
|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
 +
|dependencies=Nokia Maps 2.2.4
 +
|signing=<!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer -->
 +
|capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
 +
|keywords= Nokia Maps, JavaScript, shapes
 +
|id= <!-- Article Id (Knowledge base articles only) -->
 +
|language= <!-- Language category code for non-English topics - e.g. Lang-Chinese -->
 +
|translated-by= <!-- [[User:XXXX]] -->
 +
|translated-from-title= <!-- Title only -->
 +
|translated-from-id= <!-- Id of translated revision -->
 +
|review-by=<!-- After re-review: [[User:username]] -->
 +
|review-timestamp= <!-- After re-review: YYYYMMDD -->
 +
|update-by=[[User:avnee.nathani]]
 +
|update-timestamp=20111231
 +
|creationdate=20110621
 +
|author=[[User:Maveric]]
 +
}}
 +
{{SeeAlso|
 +
* [http://developer.here.net/javascript_api Nokia Maps API]
 +
* [http://developer.here.net/apiexplorer/examples/api-for-js/shapes/map-with-shapes.html Adding shapes onto the map]
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}}
  
 
==Prerequisites==
 
==Prerequisites==
  
−
Ovi Maps API supported web browser (basically any modern web browser)
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Nokia Maps API supported web browser (basically any modern web browser)
  
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The example assumes you have already added the Ovi Maps to your web page as explained in the previous article "Ovi Maps - add the map to any web page"
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==Important note about maps credentials==
  
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==Important about Maps credentials==
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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
−
 
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[http://developer.here.net/terms_conditions Terms and Conditions] and check the [http://developer.here.net/web/guest/plans Pricing Plans 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 for free following the instructions [http://developer.here.net/docs/maps_js/topics/credentials.html#acquiring-credentials here]
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With Ovi Maps API you can start without having any credentials given, but you might face a performance gap. In order to get the full potential out of the
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offering, you must get the credentials that authenticate your application against the Services. Please read through the Location API.
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For more information on how to obtain the credentials, please start with the  Ovi Maps API Developers Guide section "Acquiring API credentials"
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==Implementation==
 
==Implementation==
Line 22: Line 44:
  
 
<code java>
 
<code java>
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new ovi.mapsapi.map.Circle (center, radius, props)  
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new nokia.maps.map.Circle (center, radius, props)  
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<\code>
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</code>
 +
 
 +
In the example below, we create a simple circle with coloured fill and outline.
  
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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==
 
==Example code==
  
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<code java>
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<code javascript>
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<html>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<head>
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<html xmlns="http://www.w3.org/1999/xhtml">
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<script src="http://api.maps.ovi.com/jsl.js" type="text/javascript" charset="utf-8"></script>
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<head>
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</head>
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<title>Circle</title>
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<body>
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<meta http-equiv="X-UA-Compatible" content="IE=7; IE=EmulateIE9"/>
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<div id="map" style="width:100%; height:80%;"></div>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
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</body>
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<script type="text/javascript" charset="UTF-8"
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<script type="text/javascript">
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src="http://api.maps.nokia.com/2.2.4/jsl.js?with=all">
 +
</script>
 +
</head>
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<body>
 +
 +
<div id="mapContainer" style="z-index: -1; left:0px; top:0px; width: 100%; height: 80%; position: absolute;"></div>
 +
<script type="text/javascript">
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/*<![CDATA[*/
 +
/////////////////////////////////////////////////////////////////////////////////////
 +
// 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/
 +
//
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nokia.Settings.set( "appId", "YOUR APP ID GOES HERE");
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nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");
 +
 +
//
 +
/////////////////////////////////////////////////////////////////////////////////////
  
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var mapContainer = document.getElementById("mapContainer");
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var map= new ovi.mapsapi.map.Display(document.getElementById("map"),  // new instance of Ovi Maps
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{
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    components: [ new ovi.mapsapi.map.component.Behavior(),
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var map = new nokia.maps.map.Display(mapContainer, {
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                new ovi.mapsapi.map.component.ZoomBar(),
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                new ovi.mapsapi.map.component.Overview(),                           
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center: [19.119, 72.8957],
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                new ovi.mapsapi.map.component.TypeSelector(),    
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zoomLevel: 4,
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                new ovi.mapsapi.map.component.ScaleBar()],
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components:[new nokia.maps.map.component.Behavior()]
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    'zoomLevel': 4,  
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    'center':[53.1, 13.1]
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});
 
});
  
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var i=0;
 
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for (i=1;i<=7;i++)
 
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{
 
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draw_Circle(i);
 
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}
 
  
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map.objects.add(new nokia.maps.map.Circle(
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function draw_Circle(loop){
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// The center or the circle will be on longitude 50.0361, latitude  8.5619
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map.objects.add(
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[19.15, 73.91],
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    new ovi.mapsapi.map.Circle(
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// The radius of the circle in meters
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    new ovi.mapsapi.geo.Coordinate(53+loop,13+(1.5*loop)),  
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450000,
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    100+loop,
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{
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    {  
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            precision: 36,
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pen: {
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          simplify: 16,
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strokeColor: "#829f",  
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          fillColor: "#2387",
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lineWidth: 2
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          color: "#823f",
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},
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          //stroke: N/A
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brush: {
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          width: 10+loop
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color: "#829f"
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      }
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}
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    ));
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}
 
}
−
 
+
));
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</script>
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/*]]>*/ 
−
</body>
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</script>
 +
</body>
 
</html>
 
</html>
 +
</code>
  
 +
==Screenshot==
 +
[[File:NokiaMapsCircle.png|600px]]
  
−
</code>
+
==For more on the Nokia Maps API==
  
−
==For more on Ovi Maps API==
+
Please check out the Nokia Maps API full documentation and API reference here:
 +
* [http://developer.here.net/javascript_api Nokia Maps API]
  
−
Please check out the Ovi Maps API full documentation and API reference here:
+
You may also access the interactive API explorer
−
 
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* [http://developer.here.net/javascript_api_explorer API explorer]
−
http://api.maps.ovi.com
+
  
 
==Tested with==
 
==Tested with==
  
−
Google Chrome 11.0x
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* Google Chrome 20.x
−
 
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* Mozilla Firefox 12.x
−
Mozilla Firefox 5.0b
+

Revision as of 14:29, 14 March 2013

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

MultiMediaTile.png
MultiMediaTile.png
Article Metadata
Tested with
Devices(s): Internet Explorer, Firefox, Google Chrome, Safari
Compatibility
Platform(s): Web browser
Dependencies: Nokia Maps 2.2.4
Article
Keywords: Nokia Maps, JavaScript, shapes
Created: Maveric (21 Jun 2011)
Updated: avnee.nathani (31 Dec 2011)
Last edited: jasfox (14 Mar 2013)

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 Terms and Conditions and check the Pricing Plans 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 for free following the instructions here

Implementation

The API definition: 

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

In the example below, we create a simple circle with coloured fill and outline.


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="X-UA-Compatible" content="IE=7; IE=EmulateIE9"/>
		<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
		<script type="text/javascript" charset="UTF-8" 
		src="http://api.maps.nokia.com/2.2.4/jsl.js?with=all">
		</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">
/*<![CDATA[*/ 
/////////////////////////////////////////////////////////////////////////////////////
// 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 mapContainer = document.getElementById("mapContainer");
 
var map = new nokia.maps.map.Display(mapContainer, {
 
	center: [19.119, 72.8957],
	zoomLevel: 4,
	components:[new nokia.maps.map.component.Behavior()]
});
 
 
map.objects.add(new nokia.maps.map.Circle(
	// The center or the circle will be on longitude 50.0361, latitude  8.5619
	[19.15, 73.91],
	// The radius of the circle in meters
	450000,
	{
 
		pen: {
			strokeColor: "#829f", 
			lineWidth: 2
		},
		brush: {
			color: "#829f"
		}
 
}
));
/*]]>*/  
		</script>
	</body>
</html>

Screenshot

NokiaMapsCircle.png

For more on the Nokia Maps API

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

You may also access the interactive API explorer

Tested with

  • Google Chrome 20.x
  • Mozilla Firefox 12.x
Retrieved from "http://www.developer.nokia.com/Community/Wiki/index.php?title=HERE_Maps_API_-_How_to_draw_a_circle&oldid=184677"
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