On Thu, Oct 02, 2008 at 04:22:16PM +0100, Andrew Bailey wrote: > hello there, > > apologies if i've posted this several times today, i seem to have some > problems with nabble. > > I'm very much a geoserver/openlayers newbie but i've cobbled together a > basic map showing blue marble imagery of the antartic region. The > problem i have can be best described by the attached image - a radial > section from the pole is not being displayed followed by a rectangluar > section on the right hand side. The radial chunk missing i would have > thought relates to the extent of my coverage stored in geoserver but it > looks good - -180 to 180 on X and -48 to -90 on Y. I have no idea what > would be causing the straight rectangular gap in the image. Image here: > http://img220.imageshack.us/img220/5153/wmssb9.png > > I would appreciate any pointers to fixing this. As i say, i've only been > using geoserver and openlayers for a day now. Before then i was happily > doing unprojected google map code so this is my first WMS trial.
http://trac.openlayers.org/wiki/TroubleshootingTips#Problemswithimagesbeingincorrect I expect this is a GeoServer problem, and once you get the URL to an image, you'll be able to get help as to why. (my first guess is that you're taking a geographic image and trying to reproject it on the fly to a polar projection, which seems like it could introduce these kinds of problems, but I'm not sure.) > WMS is in EPSG:4030 but openlayers is projecting in EPSG:3031. I've used > the bounds as described by nsdic.org: -12400000,-12400000, > 12400000,12400000. > > Here is the native SRS WKT from geoserver, if relevant: > * Native Spatial Reference System for Coverage: Generate Envelope after > setting the property. > Native SRS WKT: GEOGCS["Unknown datum based upon the WGS 84 ellipsoid", > DATUM["Not specified (based on WGS 84 ellipsoid)", SPHEROID["WGS 84", > 6378137.0, 298.257223563, AUTHORITY["EPSG","7030"]], > AUTHORITY["EPSG","6030"]], PRIMEM["Greenwich", 0.0, > AUTHORITY["EPSG","8901"]], UNIT["degree", 0.017453292519943295], > AXIS["Geodetic longitude", EAST], AXIS["Geodetic latitude", NORTH], > AUTHORITY["EPSG","4030"]] > > My Openlayers script; > <script > src="http://localhost:8081/geoserver/openlayers/OpenLayers.js"; > type="text/javascript"> > </script> > <script defer="defer" type="text/javascript"> > var map; > var untiled; > var tiled; > function setHTML(response) { > document.getElementById('nodelist').innerHTML = > response.responseText; > }; > > OpenLayers.IMAGE_RELOAD_ATTEMPTS = 5; > OpenLayers.DOTS_PER_INCH = 25.4 / 0.28; > > function init(){ > var bounds = new OpenLayers.Bounds( > -12400000,-12400000, > 12400000,12400000 > ); > var options = { > controls: [], > maxExtent: bounds, > maxResolution: 25000, > projection: "EPSG:3031", //WGS 84 / Antarctic Polar > Stereographic > units: 'meters' > }; > map = new OpenLayers.Map('map', options); > > // setup tiled layer > tiled = new OpenLayers.Layer.WMS( > "QQ:Antarctica_Image - Tiled", > "http://localhost:8081/geoserver/wms";, > { > width: '800', > styles: '', > height: '800', > layers: 'QQ:Antarctica_Image', > srs: 'EPSG:4030', > format: 'image/png', > tiled: 'true', > tilesOrigin : "-180,-90" > }, > {buffer: 0} > ); > > // setup single tiled layer > untiled = new OpenLayers.Layer.WMS( > "QQ:Antarctica_Image - Untiled", > "http://localhost:8081/geoserver/wms";, > { > width: '800', > styles: '', > height: '800', > layers: 'QQ:Antarctica_Image', > srs: 'EPSG:4030', > format: 'image/png' > }, > {singleTile: true, ratio: 1} > ); > > map.addLayers([untiled, tiled]); > > // setup controls and initial zooms > map.addControl(new OpenLayers.Control.PanZoomBar()); > map.addControl(new OpenLayers.Control.Navigation()); > map.addControl(new OpenLayers.Control.Scale($('scale'))); > map.addControl(new > OpenLayers.Control.MousePosition({element: $('location')})); > map.addControl(new OpenLayers.Control.LayerSwitcher()); > //map.addControl(new OpenLayers.Control.OverviewMap()); > map.zoomToExtent(bounds); > > // support GetFeatureInfo > map.events.register('click', map, function (e) { > document.getElementById('nodelist').innerHTML = > "Loading... please wait..."; > var url = map.layers[0].getFullRequestString( > { > request: "GetFeatureInfo", > EXCEPTIONS: "application/vnd.ogc.se_xml", > BBOX: map.getExtent().toBBOX(), > X: e.xy.x, > Y: e.xy.y, > INFO_FORMAT: 'text/html', > QUERY_LAYERS: map.layers[0].params.LAYERS, > FEATURE_COUNT: 50, > WIDTH: map.size.w, > HEIGHT: map.size.h > }, > "http://localhost:8081/geoserver/wms"; > ); > OpenLayers.loadURL(url, '', this, setHTML, setHTML); > OpenLayers.Event.stop(e); > }); > } > </script> > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users -- Christopher Schmidt MetaCarta _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
