[OpenLayers-Users] Add Point to Map

[Jones, Christopher]

Hi all,

 

Im fairly new to OpenLayers and  javascript for that matter as well.
Having looked extensively through all the various examples and forums
and blogs, and one or 2 tutorials, I am still struggling to add a point
to a map (or a vector layer)!  All I want, is to click on a map and adda
a point.  Heres my code, please feel free to point all the errors you
want!

 

Thanks in advance!

 

Chris

(Sorry if this has been sent twice)

 

 

var myStyles = new OpenLayers.StyleMap({

    "default": new OpenLayers.Style({

        fillColor: "#ffcc66",

        strokeColor: "#ff9933",

        strokeWidth: 10

    })

});

 

function initialiseMap(){

        map = new OpenLayers.Map('map');

        map.addControl(new OpenLayers.Control.LayerSwitcher());

        var gphy = new OpenLayers.Layer.Google(

                "Google Physical",

                { type: G_PHYSICAL_MAP }

            );

        var gmap = new OpenLayers.Layer.Google(

                "Google Streets", 

                {numZoomLevels: 20 }

            );

        var ghyb = new OpenLayers.Layer.Google(

                "Google Hybrid",

                { type: G_HYBRID_MAP, numZoomLevels: 20 }

            );

        var gsat = new OpenLayers.Layer.Google(

                "Google Satellite",

                { type: G_SATELLITE_MAP, numZoomLevels: 20 }

            );

                map.addLayers([gphy, gmap, ghyb, gsat]);

                map.setCenter(new OpenLayers.LonLat(-74.0094, 40.7048),
5);

                map.addControl(new OpenLayers.Control.PanZoomBar());

                map.addControl(new OpenLayers.Control.MousePosition());

}

 

 

 

function singleClickButton() {

    document.getElementById("map").childNodes[0].style.cursor =
"crosshair";

    map.events.register('click', '', singleClickEvent); 

 

}

 

function singleClickEvent (e) {

    var lonlat = map.getLonLatFromViewPortPx(e.xy);

    var lon = lonlat.lon

    var lat = lonlat.lat

 

    var pointLayer = new OpenLayers.Layer.Vector('Points', { styleMap:
myStyles });

    map.addLayers([pointLayer]);

    var bPoint = new OpenLayers.Geometry.Point(lon , lat)

    newpoint = new OpenLayers.Feature.Vector(bPoint);

    pointLayer.addFeatures(newpoint);

    

}

 

 

 

 

 

 



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