Hi Chris, just some notes:
On 12.06.2010 19:04, Chris Lam wrote: > Hello, > > [shortened] > Here is my mapserver request URL from one tile: > > http://localhost/cgi-bin/mapserv.exe?MAP=C%3A%2Fms4w%2Fapps%2FLB_MAPFILES%2FPARCELS_MAPFILE.map&LAYERS=PARCELS_URL_pol&TRANSPARENT=true&DISPLAYPROJECTION=EPSG%3A4326&ISBASELAYER=false&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&FORMAT=image%2Fpng&SRS=EPSG%3A900913&BBOX=-13719529.331192,6352222.7966734,-13718306.33874,6353445.7891258&WIDTH=256&HEIGHT=256 > > Please try to enable DEBUG for your mapserver: http://mapserver.org/mapfile/map.html (DEBUG). Be sure to read the log and -- furthermore -- set the URL-Param EXCEPTIONS to "application/vnd.ogc.se_inxml". > Here is my relevant code: > > function init () { > //Configure map > var options = { > projection: new OpenLayers.Projection("EPSG:900913"), > units: "m", > maxResolution: 156543.0339 > maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, > 20037508.34, 20037508.34)}; > //Create new map object > var map = new OpenLayers.Map('map',options); > //Add a layerswitcher > map.addControl(new OpenLayers.Control.LayerSwitcher()); > //Add the Bing map base layer > var vemap = new OpenLayers.Layer.VirtualEarth("Virtual Earth", > { type: VEMapStyle.Hybrid, > sphericalMercator: true, > numZoomLevels: 21, > maxExtent: new > OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34) > }); > //Add the WMS parcels overlay layer > var parcels_wms = new OpenLayers.Layer.WMS( > "Lions Bay Parcels", > "http://localhost/cgi-bin/mapserv.exe?";, > { > map: 'C:/ms4w/apps/LB_MAPFILES/PARCELS_MAPFILE.map', > layers: 'PARCELS_URL_pol', > transparent: 'true', > displayProjection: new > OpenLayers.Projection("EPSG:4326"), > isBaseLayer: false, > maxExtent: new > OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34)}, > { > visibility:false > } > ); > Do not include the key-value-pairs transparent: 'true', displayProjection: new OpenLayers.Projection("EPSG:4326"), isBaseLayer: false, maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34) within the third parameter of OpenLayers.Layer.WMS. They end up in the URL to the maposerver in question and are very likely ignored. I would guess that indeed you are experiencing a mapserver problem. Try to ask over on their list about how to get mapserver to the point that it serves maps in 900913. Hope that helps, Marc > //Add the layers to the map object > map.addLayers([vemap,parcels_wms]); > //Center the map over the study area > map.setCenter(new OpenLayers.LonLat(-13718569,6353226), 14); > > ...the rest of the code is other map controls, layer opacity adjuster, and > single-click mouse event handler containing a getfeatureinfo request. > > This code seems to be fine, but am I doing something wrong with setting max > extent or max resolution? The Bing map itself centers and zooms the way I > want, but the WMS data is failing to align with it. Perhaps it could be > displayed outside of the extents and therefore not rendered at all? Or is > this a mapserver problem where my server is not requesting tiles in > epsg:900913 to align with Bing tiles? In another web template where I have > not implemented the links to Bing maps, my wms layer displays fine since the > map projection is 4326 and not 900913. That template has a line of code > map.zoomToMaxExtent(); that, when commented out, makes the working overlay > disappear completely. Don't know if that is a helpful clue. > > I have tried starting from a basic html template to add code line by line to > isolate the problem. It works fine until I add the Bing layer which just > wipes out the previously displayed WMS parcel layer to just display the Bing > hybrid with the overlay present, but rendered completely as blank 256x256 > tiles. > > Thank you for any advice, for I am out of leads! > > Regards, > > Chris Lam > > P.S. If this is a duplicate posting, you have my sincere apologies for the > lapse in etiquette. At the time of this message, I was not subscribed to > the mailing list and I think you have to be for messages to be accepted. > Also I did not see my message in the users archive or on the Nabble forum > where I found this list. Thank you for your understanding. > -- ................................................................. Im April erschienen: OpenLayers - Webentwicklung mit dynamischen Karten und Geodaten von M. Jansen und T. Adams, OpenSourcePress, München. ISBN: 978-3-937514-92-5 URL: http://openlayers-buch.de ................................................................. Dipl.-Geogr. Marc Jansen - Anwendungsentwickler - terrestris GmbH& Co. KG Irmintrudisstraße 17 53111 Bonn Tel: ++49 (0)228 / 96 28 99 -53 Fax: ++49 (0)228 / 96 28 99 -57 Email: jan...@terrestris.de Web: http://www.terrestris.de Amtsgericht Bonn, HRA 6835 Komplementärin: terrestris Verwaltungsgesellschaft mbH vertreten durch: Hinrich Paulsen, Till Adams _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
