[OpenLayers-Users] Marker Problem when having too much data : Help

[sjonnala]

My Code:


var Tower = {

    dofindProperties:function(evt)
    {   
        var bounds = map.getExtent();
        var strBounds = bounds.toBBOX();
        var rectArray = strBounds.split(',');
        
        var rect = 'x1=' +
rectArray[0]+'&y1='+rectArray[1]+'&x2='+rectArray[2]+'&y2='+rectArray[3];
        var zoomLevel = map.getZoom();  
        
        if ( zoomLevel > 12 ) { 
        var url = 
'http://q5csp1w2.tdc.cingular.net:7301/TowerTileServer/getTower?'
+ rect +  '&MITile.rest';               
        new OpenLayers.Ajax.Request(url, 
                    {  method: 'get',
                       onSuccess: Tower.ProcessTowerResults,
                       onError: Tower.endProcessing
                    }   
                );              
        }
                
    },

    *ProcessTowerResults:function(resp)
    {
        var dataStr, longitude, latitude, point;
        var jsonResp = resp.responseText;          
        var respJSONObject = eval('(' + jsonResp + ')'); 
//alert("respJSONObject : "+respJSONObject.length);
            var tmp;
        var distToFaultStr;
            for ( var i=0; i < 
respJSONObject.LBSResponse.towerList.toString();i++)
{
                     var dataStr = '<table>';           
                     dataStr += '<tr><td>' +
respJSONObject.LBSResponse.towerList[i].siteName + '</td></tr>';
             dataStr += '<tr><td>' +
respJSONObject.LBSResponse.towerList[i].techName + '</td></tr>';
             dataStr += '<tr><td>' +
respJSONObject.LBSResponse.towerList[i].siteStatus + '</td></tr>';
             dataStr += '</table>';             

                longitude = respJSONObject.LBSResponse.towerList[i].point.x;
                latitude = respJSONObject.LBSResponse.towerList[i].point.y;
                
                point = new OpenLayers.LonLat(longitude, latitude);             
        
                var icon;
                var size = new OpenLayers.Size(14,13);
                var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
                icon = new OpenLayers.Icon('Images/tower_blue.gif',size,offset);
                Tower.AddMarker(point, dataStr, icon);
                }
    }, *

    AddMarker:function(pt, dataStr, icon)
    {
        var data = new Object();
        
        data.icon = icon.clone();
        data['popupContentHTML'] = dataStr;
        data['latlon'] = pt;

        var feature = new OpenLayers.Feature(mi_Markers, pt, data);
        var marker = feature.createMarker();
        marker.events.register('click', feature, Tower.markerClick);        
        ti_Markers.addMarker(marker);
    },    
  
    markerClick: function(evt) {
        sameMarkerClicked = (this == selectedFeature);
        selectedFeature = (!sameMarkerClicked) ? this : null;
        
        for(var i=0; i < ti_Markers.map.popups.length; i++) {
            ti_Markers.map.removePopup(ti_Markers.map.popups[i]);
        }       
        
        var anchor=(this.marker)?this.marker.icon:null;
        
        popup = new
OpenLayers.Popup1.Anchored("olPopup",this.data.latlon,null,this.data.popupContentHTML,anchor,true)
        
        if (!sameMarkerClicked) {
            ti_Markers.map.addPopup(popup); 
        }
        OpenLayers.Event.stop(evt);
    }
}
    

Here "respJSONObject" length is 13783. With this large amount of data, my IE
browser is simply hanging out with out showing the marker layers. If i make
the loop for less values I'm able to see the icons on the marker layer.
Please help me in getting around this issue.
        

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