Specify the value of the labelFunction property for one of the vertical axis renderers.
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<!-- charts/CustomLabelsOnAxisRenderer.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:s="library://ns.adobe.com/flex/spark" height="600">
<fx:Script>
import mx.formatters.NumberFormatter;
import mx.charts.chartClasses.IAxisRenderer;
import mx.collections.ArrayCollection;
private function CMstoInches(ar:IAxisRenderer, strCMs:String):String {
var n:NumberFormatter = new NumberFormatter();
n.precision = 1;
return n.format((Number(strCMs) * 0.393700787).toString());
}
[Bindable]
private var SampleHeightData:ArrayCollection = new ArrayCollection([
{ Age: "Birth", height: 53},
{ Age: "3", height: 57 },
{ Age: "6", height: 64 },
{ Age: "9", height: 70 },
{ Age: "12", height: 82 },
{ Age: "15", height: 88 }
]);
[Bindable]
private var HeightData:ArrayCollection = new ArrayCollection([
{ Age: "Birth", 5: 52, 10: 53, 25:54, 50:58, 75:60, 90:62, 95:63 },
{ Age: "3", 5: 56, 10: 57, 25:58, 50:62, 75:64, 90:66, 95:67 },
{ Age: "6", 5: 62, 10: 63, 25:64, 50:68, 75:70, 90:72, 95:73 },
{ Age: "9", 5: 66, 10: 67, 25:68, 50:72, 75:74, 90:76, 95:77 },
{ Age: "12", 5: 70, 10: 71, 25:72, 50:76, 75:80, 90:82, 95:83 },
{ Age: "15", 5: 74, 10: 75, 25:76, 50:80, 75:84, 90:86, 95:87 }
]);
</fx:Script>
<fx:Declarations>
<mx:SolidColorStroke id="s1" weight="1" />
</fx:Declarations>
<s:layout>
<s:VerticalLayout />
</s:layout>
<s:Panel
title="Multiple Axis Example, Boys: Age - Height percentiles"
height="100%" width="100%">
<s:layout>
<s:HorizontalLayout />
</s:layout>
<mx:ColumnChart id="linechart" height="100%" width="100%"
paddingLeft="5" paddingRight="5" showDataTips="true"
dataProvider="{HeightData}">
<mx:seriesFilters>
<fx:Array />
</mx:seriesFilters>
<mx:backgroundElements>
<mx:GridLines gridDirection="both" />
</mx:backgroundElements>
<mx:horizontalAxis>
<mx:CategoryAxis id="h1" categoryField="Age"
title="Age in Months" ticksBetweenLabels="false" />
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LinearAxis id="v1" title="Height"
baseAtZero="false" />
</mx:verticalAxis>
<mx:verticalAxisRenderers>
<mx:AxisRenderer axis="{v1}" placement="right" />
<mx:AxisRenderer axis="{v1}" placement="right"
labelFunction="CMstoInches" highlightElements="true" />
</mx:verticalAxisRenderers>
<mx:horizontalAxisRenderers>
<mx:AxisRenderer axis="{h1}" placement="bottom" />
<mx:AxisRenderer axis="{h1}" placement="top" />
</mx:horizontalAxisRenderers>
<mx:series>
<mx:LineSeries yField="5" form="curve" displayName="5%" />
<mx:LineSeries yField="10" form="curve"
displayName="10%" />
<mx:LineSeries yField="25" form="curve"
displayName="25%" />
<mx:LineSeries yField="50" form="curve"
displayName="50%" />
<mx:LineSeries yField="75" form="curve"
displayName="75%" />
<mx:LineSeries yField="90" form="curve"
displayName="90%" />
<mx:LineSeries yField="95" form="curve"
displayName="95%" />
<mx:ColumnSeries displayName="Height of Child X"
dataProvider="{SampleHeightData}" yField="height"
fills="{[0xCC6600]}" />
</mx:series>
</mx:ColumnChart>
<mx:Legend dataProvider="{linechart}" />
</s:Panel>
</s:Application>
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