[flexcoders] Re: appending to a dataprovider in actionscript

[netdeep]

Ok, I'm not sure what code you're looking for, so here is the function which I 
believe is triggering the error.  
I've edited out as much as I could (things like display settings) to trim it 
down and here is what remains:

public function makeDateChart(genericChart:CartesianChart, 
genericLegend:Legend, chartPanel:ChartPanel, 
chart:ChartObject):void {
                                
                var axisList:ArrayCollection = chart.getAxisList();
                var renderers:ArrayCollection = new ArrayCollection();
                var seriesArray:ArrayCollection = new ArrayCollection();
                var hAxis:DateTimeAxis = new DateTimeAxis();                    
                // define each axis
                        for (var i:int=0; i<axisList.length; i++) {
                                var axis:AxisObject = axisList.getItemAt(i) as 
AxisObject;
                                if (axis.getID() == "x Axis") {  
                                            var start:Date = axis.start;
                                            var end:Date = axis.end;            
                            
                                        hAxis.labelFunction = 
fullTimeLabelFunction;
                                        // more formating of the horizontal axis
                                            var ar:AxisRenderer = new 
AxisRenderer();
                                            ar.axis = hAxis;
                                            ar.placement = "bottom";
                                            
genericChart.horizontalAxisRenderers = [ar];
                                            genericChart.horizontalAxis = 
hAxis;                                           
                                }
                                else {
                                                // Define vertical axis
                                        var vAxis:LinearAxis = new 
LinearAxis();        
                                        vAxis.autoAdjust = true;
                                        vAxis.baseAtZero = false;
                                genericChart.verticalAxis = vAxis;
                                vAxis.labelFunction = formatVertLabel;
                                vAxis.title = axis.title;
                                                // more formatting of the axis
                                        var axr:AxisRenderer = new 
AxisRenderer();
                                            axr.axis = vAxis;
                                            
                                        for (var j:int=0; 
j<axis.getSeriesList().length; j++) {
                                                var ser:SeriesObject = 
axis.getSeriesList().getItemAt(j) as SeriesObject;
                                                // define series        
                                                if (ser.getPlotType() == 
"Line") {
                                                        var 
lineSeries:LineSeries = new LineSeries();
                                                        
BindingUtils.bindProperty(lineSeries, "dataProvider", ser, "pointList");
                                                        
ser.pointList.addEventListener(CollectionEvent.COLLECTION_CHANGE,updateHandler);
                                                                
lineSeries.verticalAxis = vAxis;
                                                                
lineSeries.horizontalAxis = hAxis;
                                                        
lineSeries.xField="point1";
                                                        
lineSeries.yField="point2";
                                                        lineSeries.verticalAxis 
= vAxis;
                                                        
seriesArray.addItem(lineSeries);
                                                }
                                                }
                                        renderers.addItem(axr); 
                                }
                        }
                        genericChart.series = seriesArray.toArray().reverse();
                        genericChart.verticalAxisRenderers = 
renderers.toArray();
                                genericLegend.dataProvider = genericChart;      
                                                
                                chartPanel.horizontalScrollPolicy = "off";
                                chartPanel.addChild(genericChart);
                                if (chart.getShowLegend()) 
chartPanel.addChild(genericLegend);
            }