Line Chart glitch - grid lines thick at certain heights

Question

The Flex Line Chart control does not display correctly at certain heights.  The gridlines that are supposed to be 1px pin stripes are sometimes displayed up to 100px wide.  This can be demonstrated with 1 line of code
<mx:LineChart height="33000" x="200" y="0" id="chart_1"  width="100" ></mx:LineChart>
I also have another small app that uses a timer to demonstrate how as the height increases the gridlines increase from:
1px to 100px
then back to 1px
.... then as the chart's height increases another 7000px the 1px gridlines display correctly
then it repeats going back to thick, then thin etc... almost a pulsating effect
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="init();">
    <fx:Script>
        <![CDATA[
            import flash.utils.Timer;
            import flash.events.TimerEvent;
            private var timer:Timer = new Timer(10);
            private function init():void{
                timer.addEventListener(TimerEvent.TIMER, changeheight);
                timer.start();
            private function changeheight(event:TimerEvent):void{
                chart_1.height=chart_1.height+30;
                lblHeight.text="Chart Height:"+String(chart_1.height)+"px ";
        ]]>
    </fx:Script>
    <mx:LineChart height="33000" x="200" y="0" id="chart_1"  width="100" ></mx:LineChart>   
    <s:Label id="lblHeight"  />
    <s:Button y="80" click="timer.start();" label="Start" />
    <s:Button y="100" click="timer.stop();" label="Stop" />
</s:Application>

Answer 1

Are you able to acheive this.?
PCXML script is used for chart rendering, and with that I think you can't demark the Gridlines.
The following Xml file gives the definitions for the chart components including gridlines.
chartviewtemplates.xml
Which inturn refers to the following js for gridlines
i think you have to work on the Js here demark the grid lines by default
<Oracle_BIHome>\web\app\res\b_mozilla\views\chart
dlggridlineseditor.js
Before doing any changes take the backup.
Thanks,
Vino
Edited by: Vinodh NK on Oct 22, 2010 3:44 AM