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ink_polaroid Sysop Reged: 01/01/05 Posts: 1868 Loc: SF Bay Area, CA Re: User Data Layers       07/02/05 07:38 PM Edit   Reply   Quote   Quick Reply   We also encourage developers to take advantage of the View-Based Refresh ability of our Network Link. When the view-based refresh is active, the network link will return the coordinates (west, south, east, north) of the user's viewing window to your server. This will allow you to parse the user's location and return KML specific to that user's current view. (For example, if your network link source was a Perl script, a user looking at San Francisco might return something like http://your.server.com/source_file.pl?BBOX=-122.522859,37.721792,,-122.359974,37.813426 . If you have a lot of data spread out over a wide area, it should be obvious how this feature not only allows you to use bandwidth very efficiently, but also allows you to present the user with a clean, dynamic visual experience. Note also that with careful parsing of the coordinates of the bounding box, it is possible to calculate an approximation of the user's altitude. Several Keyhole users have asked for the ability to simulate the LOD-type display of data (i.e. dynamically displaying more data as the user's viewpoint gets closer to the ground). This is now possible. The KML tutorial document has some sample PHP code that shows you how to parse the user's location and return a placemark centered in the user's viewing window. That is a very simple application, but already we've seen people using the feature in some very creative ways. Post Extras

Entire topic Subject Posted by Posted on Dynamic Data Layers seer 07/02/05 03:42 PM Re: Dynamic Data Layers ullun   09/19/08 10:43 PM Re: Dynamic Data Layers - Data Embedding MRVDL   06/21/06 11:57 AM Re: Dynamic Data Layers - Data Embedding barryhunter   06/21/06 12:43 PM Re: Dynamic Data Layers - Data Embedding gracie20   08/18/08 02:11 AM Re: Dynamic Data Layers rdadd   04/03/06 09:41 PM Re: Dynamic Data Layers barryhunter   04/04/06 03:42 PM Re: Dynamic Data Layers godonnygo   03/21/06 02:27 AM Re: Dynamic Data Layers seer   03/30/06 01:26 PM Re: Dynamic Data Layers mver2005   12/09/05 11:32 AM GE and AdSense archinform   12/08/05 10:36 AM Re: GE and AdSense remosito   08/11/06 12:23 PM Re: GE and AdSense M_Azam_Niazi   01/06/06 02:46 AM Re: GE and AdSense Kempster   01/13/06 03:55 PM Re: GE and AdSense Runtime   01/13/06 06:14 PM Re: GE and AdSense zepguy   12/15/05 09:56 AM Re: GE and AdSense FrankB   12/08/05 10:59 AM Re: Dynamic Data Layers of URLs aludal   11/18/05 06:43 PM Re: Dynamic Data Layers jshar   11/04/05 10:32 PM Re: Dynamic Data Layers SwissRoll   01/02/06 08:11 AM Re: Dynamic Data Layers noshoes   11/07/05 05:37 AM Attn: seer, ink_polaroid, and any other GEs aludal   10/18/05 05:39 PM We want Information! seer   10/19/05 06:53 PM Re: We want Information! aludal   10/19/05 08:38 PM Re: We want Information! qsung   11/07/05 03:54 AM Re: We want Information! Jumble   10/20/05 11:21 AM Re: We want Information! aludal   10/20/05 01:57 PM Re: We want Information! barryhunter   10/20/05 03:15 AM Re: We want Information! aludal   10/20/05 08:42 AM Google Earth as Web Browser aludal   10/15/05 10:29 PM Re: Google Earth as Web Browser barryhunter   10/16/05 02:44 AM Re: Google Earth as Web Browser aludal   10/16/05 03:51 PM Re: Dynamic Data Layers Naughty   10/08/05 02:36 PM Re: Dynamic Data Layers TheOneTrueBrad   09/24/05 10:33 PM Quest for Weather information seer   09/26/05 11:07 AM Re: Quest for Weather information XRN_Anchorman   08/16/08 01:03 PM GoogleGlobe GlobeAssistant Dynamic Data Layer ErwinNikkels   07/29/05 01:03 PM Places in the Himalaya and Karakoram Adrian100   10/12/05 10:37 PM Re: GoogleGlobe GlobeAssistant Dynamic Data Layer valtus   07/29/05 01:51 PM Re: User Data Layers James_Macgill   07/06/05 01:09 PM Re: User Data Layers neo   07/06/05 04:01 PM Re: User Data Layers danielmn   10/13/05 10:11 AM Re: User Data Layers ink_polaroid   07/02/05 07:38 PM Re: User Data Layers mbueno   11/03/06 10:24 AM Re: User Data Layers Marin_SR   01/06/08 12:01 AM Re: User Data Layers barryhunter   07/30/05 05:58 PM Re: User Data Layers ink_polaroid   07/14/05 06:05 PM

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