[Users] Ext.js Chart not displaying data from a shapefile...why???

[Robert Buckley]

Hi...

With the following code I can display an ext.js chart. The y-axis is obviously 
reading the store because the max value is correct. However no bars are shown.

Could anyone point out my error as to why the data isn´t displayed?

thanks,

Robert Buckley



//**************************************************    
// the shapefile layer which contains the data
//**************************************************    

var layer_wea = new OpenLayers.Layer.Vector("Windenergieanlagen", {
        styleMap: new OpenLayers.StyleMap({
            "default": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
                graphicName: "circle",
                fillColor: "#FFD400",
                strokeColor: "#55FF7F",
                strokeWidth: 2,
                graphicOpacity: 0.2,
                graphicOpacity: 0.2,
                pointRadius: 4
            }, OpenLayers.Feature.Vector.style["default"])),
            "select": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
                graphicName: "circle",
                fillColor: "#55FF7F",
                strokeColor: "red",
                strokeWidth: 2,
                graphicOpacity: 1,
                pointRadius: 9
            }, OpenLayers.Feature.Vector.style["select"]))
        }),
        strategies: [new OpenLayers.Strategy.Fixed()],
        protocol: new OpenLayers.Protocol.WFS({
            url: "/geoserver/ows",
            version: "1.1.0",
            featureType: "WEA_wgs84",
            featureNS: "http://www.zgb.de/",
            srsName: "EPSG:900913"
        })
    });

//**************************************************        
// the store created from the shapefile layer
//**************************************************        

    var wea_store = new GeoExt.data.FeatureStore({
        fields: [{
            name: "Bez",
            type: "string"
        }, {
            name: "Standort",
            type: "string"
        }, {
            name: "Betreiber",
            type: "string"
        }, {
            header: "mw_Inner",
            type: "int",
            width: 35
        }],
        layer: layer_wea
    });


//*******************************************************************
//The chart which for some reason doesn´t display the data
//*******************************************************************    


var wea_chart=  new Ext.Panel({
        height: 400,
        renderTo: 'wea_chart',
        title: 'Column Chart with Reload - Hits per Month',
        forceFit: true,
        items: {
            xtype: 'columnchart',
            store: wea_store,
            yField: 'mw_Inner',
        url: '../ext/resources/charts.swf',
            xField: 'Standort',
            xAxis: new Ext.chart.CategoryAxis({
                title: 'Standort'
            }),
            yAxis: new Ext.chart.NumericAxis({
                title: 'mw_inner'
            }),
            extraStyle: {
               xAxis: {
                    labelRotation: -90
                }
            }
        }
    });


};