[FLEX-32225] Receive Error #1009 in AxisRenderer.as when you have only 1 dataset and your dataset name is wider than the chart.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK Previous
• Fix Version/s: Adobe Flex SDK Previous
• Component/s: Charts
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 28/Jul/08 17:20
• Updated: 18/Jul/11 14:36
• Resolved: 30/Jul/08 05:28

Description

Steps to reproduce:
1. Use the following code.

<?xml version="1.0"?>
<!-- charts/BasicColumn.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script><![CDATA[
import mx.collections.ArrayCollection;
[Bindable]
public var expenses:ArrayCollection = new ArrayCollection([

{Month:"January is a fine Month for sledding and for snowball fights.", Profit:2000, Expenses:1500}

,
]);
]]
></mx:Script>
<mx:Panel title="Column Chart">
<mx:ColumnChart id="myChart" width="50%" dataProvider="

{expenses}" showDataTips="true">
<mx:horizontalAxis>
<mx:CategoryAxis id="a1"
dataProvider="{expenses}

"
categoryField="Month"
/>
</mx:horizontalAxis>
<mx:horizontalAxisRenderers>
<mx:AxisRenderer
axis="

{a1}

"
showLine="false"/>
</mx:horizontalAxisRenderers>
<mx:series>
<mx:ColumnSeries
xField="Month"
yField="Profit"
displayName="Profit"
/>
</mx:series>
</mx:ColumnChart>
<mx:Legend dataProvider="

{myChart}

"/>
</mx:Panel>
</mx:Application>

Actual Results:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.charts::AxisRenderer/calcStaggeredSpacing()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\AxisRenderer.as:2195]
at mx.charts::AxisRenderer/calcRotationAndSpacing()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\AxisRenderer.as:1586]
at mx.charts::AxisRenderer/adjustGutters()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\AxisRenderer.as:1326]
at mx.charts::AxisRenderer/set gutters()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\AxisRenderer.as:798]
at mx.charts.chartClasses::CartesianChart/updateAxisLayout()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\chartClasses\CartesianChart.as:2028]
at mx.charts.chartClasses::CartesianChart/updateDisplayList()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\charts\chartClasses\CartesianChart.as:1355]
at mx.core::UIComponent/validateDisplayList()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:6214]
at mx.managers::LayoutManager/validateDisplayList()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:602]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:657]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8460]
at mx.core::UIComponent/callLaterDispatcher()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8403]

Expected Results:
No error.

Workaround (if any):
The problem stems from an assumption in the AxisRenderer.calcStaggeredSpacing() that you'd have more than 1 label. You can get snuff the error by creating your own AxisRenderer and overriding, like below, but in those cases, much of the chart and axis won't appear....

override public function adjustGutters(workingGutters:Rectangle, adjustable:Object):Rectangle
{
var labelSet:AxisLabelSet = this.axis.getLabels(0);
if (labelSet.labels.length == 1 && adjustable.hasOwnProperty('right') && adjustable.right == false)

{ adjustable.right = undefined; }

return super.adjustGutters(workingGutters, adjustable);
}