[OpenLayers-Users] re: zoom to feature(s) extent

[Jim White]

Hi,

You need to call

  map.zoomToExtent(new OpenLayers.Bounds(kml.getExtent()))

from the event handler. Something like this

deeds.events.on({

         'loadend': function (evt) {
             var deeds_extent = deeds.getDataExtent();
             map.zoomToExtent(deeds_extent);
         }
     });

Jim



  
Hi to all,

I am developing my app and every day I keep bumping in walls.

Today I spend 12 hours trying to figure how to zoom to the extent of the
queried features, but couldn't sort it out.
I use *zoomToExtent(vector_layer.getExtent())*,

  but it zooms somewhere in the middle atlantic.

In the firebug, when I call

*getExtent()*

it returns it. If I say

*new OpenLayers.Bounds(vector_layer.getExtent())*

  it returns just left boundary?!

If I try*vector_layer.calculateBounds*  or*getBounds*  it returns
"undefined".

The strangest thing is when I call*vector_layer.geometryType*   it returns
Null, although map displays all polygons perfectly.

Can anybody help, I would be very grateful  - this just makes me out of
myself.

Here is the code:

var map, osm, kml;

         upit="/kml/";
         {%if search_details%}

         upit="/kml/?q={{x}}&r={{y}}";

         {%endif%}

function init(){


         var options = {maxExtent: new OpenLayers.Bounds(
             1813816.431496, 5245458.4167548, 2178341.4193136,
5664389.3081316),
         units: 'm',
         projection: new OpenLayers.Projection('EPSG:900913'),
         displayProjection: new OpenLayers.Projection('EPSG:3908')

         }
             map = new OpenLayers.Map('map', options);

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

             osm = new OpenLayers.Layer.OSM(
                 "OSM");

             kml = new OpenLayers.Layer.Vector("KML",
                {
             projection: new OpenLayers.Projection('EPSG:4326'),
             protocol: new OpenLayers.Protocol.HTTP({
                 url: upit,
                 format: new OpenLayers.Format.KML({
                     extractAttributes: true,
                     extractstyles: true
                 })
             }),
             strategies: [new OpenLayers.Strategy.Fixed()]});

             map.addLayers([osm, kml]);

         var google_satellite = new OpenLayers.Layer.Google('Google', {
         type: google.maps.MapTypeId.SATELLITE
     });
     map.addLayer(google_satellite);

/*map.zoomToExtent(
                new OpenLayers.Bounds(
                     1813816.431496, 5245458.4167548, 2178341.4193136,
5664389.3081316))*/

  map.zoomToExtent(new OpenLayers.Bounds(kml.getExtent()))

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