[OpenLayers-Users] Zoom to point given feature ID by GET

[Arnd Wippermann]

Hi,

Below some code to get the idea

//http://yourServer/someSide/page.html?CENTER=100,120&ZOOM=8

function init()
{
    var CENTER = [2627000, 5685625];
    var ZOOM   = 0;

    objParams = OpenLayers.Util.getParameters();
 
    var CENTER = objParams.CENTER ? objParams.CENTER.split(",") : CENTER;
    var ZOOM   = objParams.ZOOM   ? parseInt(objParams.ZOOM) : ZOOM;
    var theID  = objParams.ID     ? objParams.ID : null;
    ...
    ...
    
    map.setCenter(new OpenLayers.LonLat(CENTER[0], CENTER[1]), ZOOM);

    if(theID != null)
    {   vectorLayer.events.register("loadend", vectorLayer, function (e) {
            var objFs = this.features;
            for(var i=0;i<objFs.length;i++)
            {   if(objFs[i].ID = theID;
                {   var objBounds = objFs[i].geometry.getBounds();
                    var x = (objBounds.left+objBounds.right )/2;
                    var y = (objBounds.top +objBounds.bottom)/2;
                    CENTER = [x, y];
                    break;
                }
            }
        });
        map.setCenter(new OpenLayers.LonLat(CENTER[0], CENTER[1]), ZOOM);
    }

}        

To center your map by a feature of a vector layer you have to be sure, that
your features are loaded. 

I would center my map to default values, register a loadend for the vector
layer, and then would parse for the feature by id and then set the center by
the new value.

Arnd
 

-----Ursprüngliche Nachricht-----
Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
Auftrag von giraam
Gesendet: Mittwoch, 30. Juni 2010 15:15
An: users at openlayers.org
Betreff: [OpenLayers-Users] Zoom to point given feature ID by GET


Hi folks! 

I want to know if it's possible to zoom to a point, I mean, i.e.:
setCenter(point, 2)
but having the feature ID at the URL... 

This is just on the first load..! Any idea? Thanks!

-----
just another web developer
--
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