Hi, As you want to display your WMS on OSM layer, you have to use the projection EPSG:900913 in OpenLayers. Then OpenLayers build the requeststring with the coordinates in this projection. In a normal case MapServer would transform the requested data from EPSG:4326 (if your layer is in that projection) to EPSG:900913 and send them back and in OpenLayers they will displayed in correct manner.
As I understood, you grab the requeststring to parse it by yourself and then do some action. In this case you have to do the transformation by yourself. Arnd -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Gesendet: Mittwoch, 7. September 2011 16:59 An: Arnd Wippermann Betreff: AW: [OpenLayers-Users] OpenLayers/Leaflet+MapServer (WMS) -coordinate-problem Hi, I tried your suggestions but no success. ### My OL-Code: var options = { controls:[], //create map without controls -> add them later projection: new OpenLayers.Projection("EPSG:900913"), displayProjection: new OpenLayers.Projection("EPSG:4326"), units: "m", numZoomLevels: 18, maxResolution: 156543.0339, maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508.34) }; var map = new OpenLayers.Map('map', options); var layer = new OpenLayers.Layer.OSM(); map.addLayer(layer); var wetterpool_wms_layer = new OpenLayers.Layer.WMS("Wetterpool Wetterdaten", "http://www.wetterpool.de/!test/OpenlayersWMS/mapserver.php";, { layers: 'basic',format: 'image/png' }, { singleTile: true, ratio: 1, opacity: 0.5, transitionEffect: 'resize' } ); wetterpool_wms_layer.addOptions({isBaseLayer: false}); map.addLayer(wetterpool_wms_layer); map.addControl(new OpenLayers.Control.PanZoomBar()); map.addControl(new OpenLayers.Control.MouseToolbar()); map.addControl(new OpenLayers.Control.LayerSwitcher({'ascending':false})); map.addControl(new OpenLayers.Control.Permalink()); map.addControl(new OpenLayers.Control.Permalink('permalink')); map.addControl(new OpenLayers.Control.MousePosition()); map.addControl(new OpenLayers.Control.OverviewMap()); map.addControl(new OpenLayers.Control.KeyboardDefaults()); map.zoomToMaxExtent(); ### MY WMS-Code <?php foreach($_REQUEST AS $key => $value) { $string .= $key.'->'.$value."\n"; } // Send me an email with url-params and quit mail('xxx','WMS',$string);exit; ?> ####################################################### Problem is that the coordinates from OpenLayers still are in wrong format. It wouldn't be a problem if setExtent would accept different formats of coordinates. It's realy strange that a mapfile accepts coordinats like -29156140.063875 and setExtent needs decimals like 50.3453° More ideas? Thank you! Regards, Guido -------- Original-Nachricht -------- > Datum: Tue, 6 Sep 2011 22:30:48 +0200 > Von: "Arnd Wippermann" <[email protected]> > An: [email protected] > CC: [email protected] > Betreff: AW: [OpenLayers-Users] OpenLayers/Leaflet+MapServer (WMS) > -coordinate-problem > Hi, > > Most likely you have initialized your map without map options. > > map = new OpenLayers.Map("map"); > > Then the map projection is EPSG:4326 by default, also the OSM layer > (baselayer) is displayed with projection EPSG:900913. > > It seems, that the querystring by OpenLayers takes the projection from > the map and the coordinates from the baselayer. > > To be sure about projections it is always the best way to initialize > the map with options like > > var options = { > controls:[], //create map without controls -> add them later > projection: new OpenLayers.Projection("EPSG:900913"), > displayProjection: new OpenLayers.Projection("EPSG:4326"), > units: "m", > numZoomLevels: 18, > maxResolution: 156543.0339, > maxExtent: new OpenLayers.Bounds(-20037508, -20037508, > 20037508, 20037508.34) }; var map > = new OpenLayers.Map('map', options); > > Regards, > Arnd > > -----Ursprüngliche Nachricht----- > Von: [email protected] > [mailto:[email protected]] Im Auftrag von > [email protected] > Gesendet: Dienstag, 6. September 2011 12:21 > An: [email protected] > Betreff: [OpenLayers-Users] OpenLayers/Leaflet+MapServer (WMS) > -coordinate-problem > > Hello community, > > I got a bad problem with coordinates. I tried to setup a raw MapServer > WMS with OpenLayers frontend. My aim is to show measurement data from > a database as a single tile with OpenLayers. > > Some facts: OpenLayers: - Background-Map: OSM (new > OpenLayers.Layer.OSM();) > - requesting my MapServer WMS (new OpenLayers.Layer.WMS) with > Single-Tile-Mode > > MapServer: - Raw WMS - means I'm fetching the querystring by myself > and trying to apply it to the map - No mapfile used - all settings in > map-generating file itself > > My problem is, that OpenLayers creates a querystring like that... > > LAYERS->basic > FORMAT->image/png > PROJECTION->EPSG:4326 > UNITS->m > SERVICE->WMS > VERSION->1.1.1 > REQUEST->GetMap > STYLES-> > EXCEPTIONS->application/vnd.ogc.se_inimage > BBOX->-11231962.682325,-2416633.0858313,19763558.029875,12161436.94610 > BBOX->6 > WIDTH->1584 > HEIGHT->745 > > ...and mapserver has a method to set the bounding box from OpenLayers... > > $Map->setExtent(lat1,lon1,lat2,lon2); > > but the coordinates have a different format. OpenLayers provides > coordinates in UTM(?) while setExtent expects decimal values as I > often saw them in example scripts. > > My question is: How can I create a map which fits perfectly with the > OSM map, but without using a mapfile and tilemode since I need > singletile-mode? > I couldn't figure out to set the bounding box correctly or even > convert the coordinates. Additionally I suppose that something is > wrong with my projections. > > BTW using leaflet causes the same problem. Coordinates look like > bbox->1878516.4071364915,5635549.221409475,2504688.5428486555,6261721. > bbox->357121 > 64 while setExtent() needs decimal values (lat/lon) > > I hope someone can help me.:) > -- > Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen > Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users > -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
