Hi Eoinyp, if you want to see the whole USA, then your bounds are something like this: var bounds = new OpenLayers.Bounds(-6906850,-2055250,3160850,3805350); and maxResolution:10000
http://gis.ibbeck.de/ginfo/apps/OL27Client/OL27ClientGis.asp?WMC=./data/WMC/ EPSG_26986.wmc.xml if you use google layer with sphericalMercator, then you have to set the options for the map in the right way. You have taken the same as for EPSG:26986. Your extent describes something in Togo, Benin. try this: var options = { 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) }; map = new OpenLayers.Map('map', options); http://gis.ibbeck.de/ginfo/apps/OL27Client/OL27ClientGis.asp?WMC=./data/WMC/ EPSG_900913_Mass.wmc.xml Good luck Arnd -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von eoinyp Gesendet: Dienstag, 25. August 2009 18:27 An: [email protected] Betreff: Re: [OpenLayers-Users] map bounds or projection problem? Thanks Arnd, I made some progress, but Im not quite there yet. Adding in the navigation control made a small difference. It works well when I have 2 layers (no google) see: http://www.eoinmaca.com/maps/OpenLayers/twolayers.htm However the bounds of the area shown is still constrained. There is data there for all US states so I think it is the line: var bounds = new OpenLayers.Bounds( 19012.0201171875, 768402.5875, 345695.3353515625, 968859.1625); that constrains the display of information. I just dont know how to figure out what the correct bounds should be! Again, this problem is compounded with the addition of the third layer see: http://www.eoinmaca.com/maps/OpenLayers/threelayers.htm I cannot zoom in on the area where the layers are overlaid on the google map, It always brings me to north Africa! :( Thanks for the help on the epsg. When I have only 2 layers I used EPSG:26986, the local projection, and when I add the google layer, I define the map projection to be EPSG:900913, google spherical mercator. Really puzzeled as to why it always zooms in on North africa and doesnt let me pan to the Northeren USA. Thanks again, Eoinyp _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
