source: src/django_gheat/website/static/heatmap.js@ 9171

function init(){

        var projection_wgs = new OpenLayers.Projection("EPSG:4326"); // WGS 1984

        map = new OpenLayers.Map('heatmap', {
                controls: [
                                new OpenLayers.Control.Navigation(),
                                new OpenLayers.Control.PanZoomBar(),
                                new OpenLayers.Control.ScaleLine(),
                                new OpenLayers.Control.LayerSwitcher(),
                                new OpenLayers.Control.MousePosition({ 'displayProjection' : projection_wgs }),
                ],
                maxExtent: new OpenLayers.Bounds(-20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892), 
                numZoomLevels:16, 
                maxResolution:156543.0339, 
                units:'m', 
                projection: "EPSG:900913",
                displayProjection: new OpenLayers.Projection("EPSG:4326")
        });
        
        layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");
        map.addLayer(layerMapnik);
        layerHeatmap = new OpenLayers.Layer.OSM.Overlay1("Overlay 1", {isBaseLayer: false, visibility: true});
        map.addLayer(layerHeatmap);

        layerHeatmap2 = new OpenLayers.Layer.OSM.Overlay2("All Access points", {isBaseLayer: false, visibility: false});
        map.addLayer(layerHeatmap2);

        layerHeatmap3 = new OpenLayers.Layer.OSM.Overlay3("Wireless Leiden Only", {isBaseLayer: false, visibility: true});
        map.addLayer(layerHeatmap3);
        
        var lon   = 4.48907;
        var lat   = 52.158431;
        var zoom  = 16;

        var lonLat = new OpenLayers.LonLat(lon, lat).transform(new OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
        map.setCenter (lonLat, zoom);
}