[OpenLayers-Users] Google and WFS Overlay problem

Sun Jun 27 07:52:04 EDT 2010

 What about using internalProjection and externalProjection within WFS ?
Am 27.06.2010 08:12, schrieb Cecily:
> I am trying to add WFS to Google base layers, but failed. 
>
> The problem may be Poxyhost setting, but I am not sure...
>
> I am just a beginner using OpenLayers. I really appreciate any help !!
>
> <html xmlns="http://www.w3.org/1999/xhtml">
>   <head>
>     <title>OpenLayers: Spherical Mercator</title>
>     <link rel="stylesheet"
> href="http://localhost:8080/geoserver/OpenLayers/theme/default/style.css"
> type="text/css" />
>     <link rel="stylesheet" href="style.css" type="text/css" />
> 	
>     <script
> src='http://maps.google.com/maps?file=api&amp;v=2&amp;key=ABQIAAAAjpkAC9ePGem0lIq5XcMiuhR_wWLPFku8Ix9i2SXYRVK3e45q1BQUd_beF8dtzKET_EteAjPdGDwqpQ'></script>
>    
>
>     <script
> src="http://localhost:8080/geoserver/OpenLayers/OpenLayers.js"></script>
>     <script type="text/javascript">
>
>         var map;
> 		var geographic = new OpenLayers.Projection("EPSG:4326");
> 		var mercator = new OpenLayers.Projection("EPSG:900913");
> 		
> 		var wfsBounds = new OpenLayers.Bounds(-74.027, 40.684, -73.907, 40.878);
> 		
>         OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3;
>
>         function init(){
>             
>             var options = {
>  
> 		projection: mercator,
> 		displayProjection: geographic,
>                 units: "m",
>                 numZoomLevels: 18,
>                 maxResolution: 156543.0339,
>
> 		maxExtent: new OpenLayers.Bounds(-20037508, -20037508, 20037508, 20037508)
>             };
>             map = new OpenLayers.Map('map', options);
>
>             // create Google Mercator layers
>             var gmap = new OpenLayers.Layer.Google(
>                 "Google Streets",
>                 {sphericalMercator: true}
>             );
>             var gsat = new OpenLayers.Layer.Google(
>                 "Google Satellite",
>                 {type: G_SATELLITE_MAP, sphericalMercator: true}
>             );
>             var ghyb = new OpenLayers.Layer.Google(
>                 "Google Hybrid",
>                 {type: G_HYBRID_MAP, sphericalMercator: true}
>             );
>
>
>
> 			var wfs = new OpenLayers.Layer.Vector("	Manhattan (NY) roads",
> 			{strategies: [new OpenLayers.Strategy.BBOX()],
> 			protocol: new OpenLayers.Protocol.WFS({
> 				version: "1.0.0",
> 				url:"http://localhost:8080/geoserver/wfs",
> 				featureType: "tiger_roads",
> 				featureNS: "http://www.census.gov"}),
> 				projection:geographic
> 			})
> 			
>         map.addLayers([gmap, gsat, ghyb, wfs]);
>         map.addControl(new OpenLayers.Control.LayerSwitcher());
>
>         map.addControl(new OpenLayers.Control.MousePosition());
>
> 	map.zoomToExtent(wfsBounds.transform(geographic, mercator));
>         }
>
>     </script>
>   </head>
>   <body onload="init()">
>     <h1 id="title">OpenLayers Spherical Mercator Example</h1>
>
>     <div id="tags">
>     </div>
>     <p id="shortdesc">
>         Shows the use of the Spherical Mercator Layers, for overlaying 
>         Google and wfs.
>     </p>
>     <div id="map" class="smallmap"></div>
>
>     <div id="docs">
>     </div>
>   </body>
> </html>
>
>