[OpenLayers-Users] POI lost when dragging the map

[Tobias Luetticke]

Hi guys

I am displaying POIs (speed cameras) via WMS as overlay on top of a Google base map. When I drag the map (in my case) to the left the POI markers disappear from the map. When I drag the map back they reappear. It appears data is coming back from GeoServer each time, but doesn't always make it on the map...

I am using 
* OpenLayers 2.8
* GeoServer 2.0.1
* Firefox 3.6.3

Data is coming from Oracle, but the same happens if I attach an shapefile data store. Native SRS of the layer is EPSG:2193 (EPSG:NZGD2000 / New Zealand Transverse Mercator ), but it doesn't seem to make a difference whether I let GeoServer serve them with EPSG:2193 (native) or reproject to EPSG:900913.

I also just realised that the phenomenon happens with all my WMS layers. I suspect I am missing something very obvious, but are stuck nonetheless. Any pointers much appreciated!

My OpenLayers code is:
			var map;			
				
			function init(){							
	  			var options = {
	      			projection: new OpenLayers.Projection("EPSG:900913"),
	      			displayProjection: new OpenLayers.Projection("EPSG:4326"),
	      			units: "m",
	      			numZoomLevels: 20,
	     			maxResolution: 156543.0339,
					maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34)
	  			};

		  		map = new OpenLayers.Map('map', options);
				
		  		var gphys = new OpenLayers.Layer.Google(
		      			"Google Physical",
		      			{type: G_PHYSICAL_MAP, 'sphericalMercator': true, numZoomLevels: 20}
		  		);
				
				var wmslayer2 = new OpenLayers.Layer.WMS(
		           		"Speed Cameras",
		           		"http://localhost:8080/geoserver/wms", 
		           		{'layers': 'SPEED_CAMERA', 'format':'image/png', 'transparent':'true'},
		           		{'opacity': 1.0, 'isBaseLayer': false, 'visibility': false}
		      	);		        
				
		  		map.addLayers([gphys, wmslayer2]);

Cheers
Tobias


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