On Fri, Dec 21, 2007 at 06:17:12PM +0200, Maria Panagou wrote:
> Hi,
> I'm trying to built an openlayers app, displaying a Google maps base layer
> and a WMS layer. My Wms layer, based on Mapserver, was originally in WGS84
> projection and didn't display correctly overlaid on the Google map (a slight
> y-axis shift). I decided to follow the spherical Mercator example, so I
> formed my html like this:
drop the maxResoluion from your Map object. It can't affect Google
(since it has a fixed set of resolutions) and all it's doing is causing
your overlay to not turn on.
-- Chris
> var centerM=OpenLayers.Layer.SphericalMercator.forwardMercator(24, 38.3);
> var zoom = 7;
> var map, layer;
>
> var blow =
> OpenLayers.Layer.SphericalMercator.forwardMercator(20, 34.8);
> var bhigh =
> OpenLayers.Layer.SphericalMercator.forwardMercator(28.4,
> 41.6);
>
> function init(){
> var options = {
> numZoomLevels: 16,
> projection: "EPSG:900913",
> units: "m",
> maxResolution: 3000,
> maxExtent: new OpenLayers.Bounds(blow.lon,
> blow.lat, bhigh.lon,
> bhigh.lat),
> restrictedExtent: new
> OpenLayers.Bounds(blow.lon, blow.lat, bhigh.lon,
> bhigh.lat),
> controls: [new
> OpenLayers.Control.LayerSwitcher(),
> new OpenLayers.Control.PanZoomBar(),
> new OpenLayers.Control.MouseToolbar(),
> new OpenLayers.Control.MousePosition({prefix:
> 'x: ', separator: ', y:
> '})],
>
> theme:null
> }
> map = new OpenLayers.Map('map', options);
>
> var satellite = new OpenLayers.Layer.Google( "Google Satellite"
> , {type: G_SATELLITE_MAP, 'sphericalMercator':true} );
> var hybrid = new OpenLayers.Layer.Google( "Google Hybrid" ,
> {type: G_HYBRID_MAP, 'sphericalMercator':true });
> var dtm = new OpenLayers.Layer.WMS( "ICEDS (Integrated CEOS European
> Data Server) WMS",
> "http://iceds.ge.ucl.ac.uk/cgi-bin/icedswms?";, {layers:
> "srtm"});
> var quakes = new OpenLayers.Layer.WMS.Untiled(
> "???????????????????? ??????????????",
>
> "http://127.0.0.1:80/cgi-bin/mapserv.exe?map=../htdocs/mpanagou/Quakes1.map&";,
> {layers: "Quakes",
> transparent: "true", format: "image/png", isBaseLayer:
> "false", srs:"EPSG:900913"});
>
> map.addLayers([satellite, hybrid, dtm, quakes]);
>
> map.setCenter(new OpenLayers.LonLat(centerM.lon,
> centerM.lat), zoom);
>
> }
>
> I had to also convert my WMS layer to Spherical Mercator coords. The problem
> now is that now the overlay layer appears to be grayed out and it doesn't
> display at all. I thought it maybe had something to do with resolutions and
> set maxresolution to the wms but didn't work. When i set the parameter for
> the getmap request "displayOutsideMaxExtent: true" then the overlay is
> activated, can be switched on and off but I stil can't see it. I verified
> that coords are ok. Please help me, I'm stuck
>
> _______________________________________________
> Users mailing list
> [email protected]
> http://openlayers.org/mailman/listinfo/users
--
Christopher Schmidt
MetaCarta
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