Jason, I am using Google Streets actually :). It just isn't working out for me atm...
Andreas, I tried both suggestions. I got rid of the 'map' parameter in the map instantiation and had the same result, the layer was blank. Then I tried again with using my options variable in my mapPanel and nothing loaded up at all when I did this :( My entire page was blank... Thanks, elshae On Fri, Sep 24, 2010 at 10:39 AM, Andreas Hocevar <[email protected]>wrote: > Hi, > > the problem here is that you configure the OpenLayers map in the wrong > mode. See below: > > On Sep 23, 2010, at 21:43 , IT Intern wrote: > > > Hello GeoExt users, > > > > This one's gotten me totally stumped. I have some base layers and a few > wms overlays. When my page loads it shows the base layer for a quick second > and then goes blank as it loads my overlays. It stays blank until I click > the map, etc. Then it displays properly. I've Googled all sorts of things > concerning this sort of issue and have come up with nothing that gives me a > hint as to why this could be. This never happened to me before until I > started using GeoExt to display my map. Is it something in code I must > write for GeoExt or OpenLayers so that this doesnt happen? It's driving me > crazy!!! > > > > Code: > > > > //Base Layers > > > > var ghyb = new OpenLayers.Layer.Google( > > "Google Hybrid", > > {type: google.maps.MapTypeId.HYBRID, numZoomLevels: > 20} > > ); > > > > var gmap = new OpenLayers.Layer.Google( > > "Google Streets", // the default > > {numZoomLevels: 20},{visibility: true} > > ); > > > > var osm = new OpenLayers.Layer.OSM(); > > > > //..... > > .... > > .... > > > > var options = { > > controls: [new OpenLayers.Control.Navigation()], > > maxExtent: new OpenLayers.Bounds(-20037508.34, > -20037508.34, 20037508.34, 20037508.34), > > maxResolution: "auto", > > projection: new OpenLayers.Projection("EPSG:900913"), > > units: 'm', > > allOverlays: false > > } > > > > > > var map = new OpenLayers.Map('map', options); > > Wrong! If at all, use the following instead: > > var map = new OpenLayers.Map(options); > > You don't want to render the map at this point, so you have to configure it > without a map div. > > > > map.addLayers([gmap, ghyb, osm, all_chn, all_tib, > chn_bridges, tib_bridges, chn_countys, tib_countys, chn_farms, tib_farms, > chn_glaciers, tib_glaciers, chn_grazing, tib_grazing, chn_hwyCrew, > tib_hwyCrew, chn_hospitals, tib_hospitals, chn_lakes, tib_lakes, > chn_monastaries, tib_monastaries, chn_pass, tib_pass, chn_rivers, > tib_rivers, chn_townships, tib_townships, chn_villages, tib_villages]); > > > > var mapPanel = new GeoExt.MapPanel({ > > title: "Map", > > map: map, > > Now the preferred way to configure a MapPanel would be to remove the "var > map = ..." above entirely, and configure the map here: > > map: options, > layers: [gmap, ghyb, osm, all_chn, all_tib, chn_bridges, > tib_bridges, chn_countys, tib_countys, chn_farms, tib_farms, chn_glaciers, > tib_glaciers, chn_grazing, tib_grazing, chn_hwyCrew, tib_hwyCrew, > chn_hospitals, tib_hospitals, chn_lakes, tib_lakes, chn_monastaries, > tib_monastaries, chn_pass, tib_pass, chn_rivers, tib_rivers, chn_townships, > tib_townships, chn_villages, tib_villages] > > Regards, > Andreas. > > > center: map.setCenter(new OpenLayers.LonLat(93.9, > 29.53).transform(new OpenLayers.Projection("EPSG:4326"), > map.getProjectionObject())), > > zoom: 9, > > region: "center", > > bbar: [{ > > xtype: "label", > > text: "Scale = 1 : " > > }], > > items: [{ > > xtype: "gx_zoomslider", > > vertical: true, > > height: 300, > > x: 10, > > y: 20, > > plugins: new GeoExt.ZoomSliderTip() > > }] > > }); > > > > var layerRoot = new Ext.tree.TreeNode({ > > text: "All Layers", > > expanded: true, > > autoLoad: true > > }); > > > > //Is there something to set here??? > > layerRoot.appendChild(new > GeoExt.tree.BaseLayerContainer({ > > text: "Base Layers", > > map: map, > > layerStore: mapPanel.layers, > > expanded: true, > > autoLoad: true > > })); > > > > //..... > > > > Thank you very much, I appreciate any suggestions :), > > > > elshae > > > > > > > > _______________________________________________ > > Users mailing list > > [email protected] > > http://www.geoext.org/cgi-bin/mailman/listinfo/users > > > > -- > Andreas Hocevar > OpenGeo - http://opengeo.org/ > Expert service straight from the developers. > >
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