Hi, You can't use the ScaleLine control because you're using and old version of OpenLayers (http://www.openlayers.org/api/OpenLayers.js version 2.5). The ScaleLine control was added after the 2.5 release.
You have to use a more recent version of OpenLayers, the new stable release is not ready yet but you can use the release candidate: http://openlayers.org/api/2.6-rc1/OpenLayers.js But this is not the final code !! When the final 2.6 will be released this url will become obsolete ... fredj Le Tue, 1 Apr 2008 20:04:09 -0400, "G. Paolo Sanino V." <[EMAIL PROTECTED]> a écrit : > 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. > 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> > > any help or idea would be very much appreciated... > > Best regards, > Gian Paolo > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users -- Frédéric Junod Camptocamp SA _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
