On Wed, Apr 2, 2008 at 2:04 AM, G. Paolo Sanino V. <[EMAIL PROTECTED]> wrote: > Hi All, > > I am new at OpenLayers and I think this is awesome. I am trying to build a > small GIS for an ONG using the same layers used on the Openlayers homepage. > The big step will be to connect it to a database to store the markers. But in > a later step. > I am so sorry to bother you with such a question. It may be very simple but I > have had nightmares looking for a solution... Here is my problem: > > I have gotten two layers working using "map.addlayer()" for each layer > instead > of using "map.addlayers()" for all. I do not know why, if I use "AddLayers", > I only get a blank map (white) with only the blue buttons on the left up > corner.
Doesn't "map.addLayers([jpl_wms, ol_wms]);" work? > Also, and maybe related, I got the center and zoom of the map working, > however, the next controls do not work/show in the map: > ScaleLine, MousePosition, OverviewMap. > > Here is my code (from: http://www.cmmrleviathan.org/ciencia_GIS2.htm): > > <script type="text/javascript"> > var map, ol_wms, jpl_wms; > function init(){ > map = new OpenLayers.Map('map', {'maxResolution': 1.40625/2}); > jpl_wms = new OpenLayers.Layer.WMS( "Mapa > Satelital","http://labs.metacarta.com/wms-c/Basic.py?";, {layers: 'satellite', > format: 'image/png' } ); > map.addLayer(jpl_wms); > ol_wms = new OpenLayers.Layer.WMS( "Mapa > Vectorial", "http://labs.metacarta.com/wms-c/Basic.py?";, {layers: 'basic', > format: 'image/png' } ); > map.addLayer(ol_wms); > map.setCenter(new OpenLayers.LonLat(-79, -29), 2); > map.addControl(new OpenLayers.Control.LayerSwitcher()); > map.addControl(new OpenLayers.Control.ScaleLine()); > map.addControl(new OpenLayers.Control.MousePosition()); > map.addControl(new OpenLayers.Control.OverviewMap()); > } > </script> I copied/pasted your code in OpenLayers' wms.html example and it just worked. The controls are there. When I load your web page in FF, FireBug shows this error: OpenLayers.Control.ScaleLine is not a constructor map.addControl(new OpenLayers.Control.ScaleLine()); It seems to me that you're missing controls in your OpenLayers.js build. You can try to use http://dev.openlayers.org/nightly/OpenLayers.js instead of your (custom) OpenLayers.js build to make sure that's your problem. Cheers, -- Eric _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
