Le portail francophone de la géomatique

  

      function init() {          

       
        map = new OpenLayers.Map("basicMap",
                      {displayProjection: new OpenLayers.Projection("EPSG:4326")});
        
        var ghyb = new OpenLayers.Layer.Google( "Google Hybride",{type: google.maps.MapTypeId.HYBRID, numZoomLevels: 20} );
        var gsat = new OpenLayers.Layer.Google( "Google Satellite", {type: google.maps.MapTypeId.SATELLITE, numZoomLevels: 22});

        var ign = new GeoportalLayer('GEOGRAPHICALGRIDSYSTEMS.MAPS:WMSC',{opacity:1.0});
        
     // Construction carte open Steet Map  
                         
        var macarte        = new OpenLayers.Layer.OSM(null,null, {opacity:0.5});
        var fromProjection = new OpenLayers.Projection("EPSG:4326");   // Transform from WGS 1984
        var toProjection   = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection 
        var position       = new OpenLayers.LonLat(2.534904,48.387558).transform( fromProjection, toProjection);


       var zoom           = 18 ;

        etc.....

        map.addLayer(ghyb);
        map.addLayer(macarte);
        map.addLayer(ign);
                  
        map.setCenter(position, zoom );