Trouble Redrawing a Chart

Question

I have a combination chart that has stacked columns and two line series. On one series, after the 7th LineSeriesItem, the data is all zero. My goal is to have the line series end at the last >0 data point.
I wrote some code that splices the data series. As I step through the code, I see that the series is spliced correctly, however, when I call invalidateDisplayList to force a redraw of the chart, I get a "Error #1010: A term is undefined and has no properties." error in the GraphicsUtilities.as code. It looks like the Flex code is trying to draw a line segment to a now deleted datapoint.
After I click continue, the chart is redrawn and the line segments are not drawn and the line series appears as I expect.
Can anyone help me figure out what is causing this error?
            //loops through chart series and will remove all items that are
            //zero from data series
            [Bindable]
            private var tempSeries:LineSeries;
            private function removeZeroItems():void {
                var mySeries:String = "Realistic Estimate";
                for(var i:String in chart.series){
                    //find mySeries in chart.series
                    if(chart.series[i] is LineSeries){
                        if(chart.series[i].yField == mySeries){
                            for(var j:String in chart.series[i].items){
                                if(chart.series[i].items[j].yValue == null){
                                    //remove current item
                                    //trace(chart.series[i].items[j].xValue);
                                    //having only j specified in splice
                                    //will remove any items after it
                                    chart.series[i].items.splice(j);    
                            tempSeries = new LineSeries();
                            tempSeries = chart.series[i];
                            chart.series.splice(i,1); //remove series
                            chart.series.push(tempSeries); //add temp spliced series
                            chart.invalidateDisplayList(); //causes error
                this.updateDisplayList(this.unscaledWidth.valueOf(),this.unscaledHeight.valueOf());                

Answer 1

Sarah,
I don't have an answer, but I have a suggestion that my help you find the answer.
In my experience, I have first set up a cross-tab - via "Insert menu bar - Cross-tab...".
This gives me the ability to "analyze" my data - including the generation of percentages.
Then, I do a right-click on the "Cross-tab" object, and select the "Insert Chart...".
This builds a "chart" from the "cross-tab", and then all is left is the "formatting".
I hope this helps!
Dan Welfle