[OpenLayers-Users] Layer.GML.features.length

[Roger Kunkel]

Hi Jeff,
In my app I zoom to the largest feature successfully. I sub-classed  
Layer.GML and overrode the
  requestSuccess function:

     /**
      * Overrides the ajax return process to immediately zoom to the  
fetched feature.
      */
     requestSuccess:function(request) {

         var doc = request.responseXML;

         if (!doc || request.fileType!="XML") {
             doc = request.responseText;
         }

         map.GML = doc;
         var gml = this.format ? new this.format() : new  
OpenLayers.Format.GML();

         this.addFeatures(gml.read(doc));

         // zoom to the extent of the largest geom
         this.maxIndex = 0;
         var i;
         for (i=0;i<=this.features.length - 1;i++) {
             if (parseFloat(this.features[i].geometry.getArea()) >  
parseFloat(this.features[this.maxIndex].geometry.get\
Area())) {
                 this.maxIndex = i
             }
         }
         map.zoomToExtent(this.features 
[this.maxIndex].geometry.getBounds());

     },

Hope this helps.




Roger Kunkel
CERES Program
Dept. of Land Air & Water Resources
UC Davis
rakunkel at ucdavis.edu


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20070607/7b8e5374/attachment.html