Dynamically Change Fusion Chart Value with Slider Event in flex
I am having a set of slider for each bar in the graph. I have bindded all the sliders with their corresponding bars. When i change the value of slider the value in the ArrayCollection changes and i have also used
singleData.refresh();
but the values in the chart remains unchanged. How can i update the values in the chart with the change in values of the slider.
Here is my code:
<mx:Script>
<![CDATA[
import mx.events.SliderEvent;
import mx.collections.ArrayCollection;
[Bindable]
private var singleData:ArrayCollection=new ArrayCollection([
{label:'Diego', value:'22'},
{label:'Steve', value:'20'},
]);
private function updateChart(event:SliderEvent, index:Number):void{
singleData.getItemAt(index).value = String(event.value);
singleData.refresh();
}
]]>
</mx:Script>
<ns1:FusionCharts x="10" y="10" FCChartType="Column3D" width="500">
<ns1:FCChartData FCParams="{chartParam}" FCData="{singleData}" />
</ns1:FusionCharts>
<mx:VBox x="10" y="318">
<mx:HBox>
<mx:Label text="Diego:" width="100"/>开发者_StackOverflow社区;
<mx:HSlider id="SliderDiego" change="{updateChart(event,0)}" liveDragging="true" value="{singleData.getItemAt(0).value}" minimum="0" maximum="100" width="120"/>
</mx:HBox>
<mx:HBox>
<mx:Label text="Steve:" width="100"/>
<mx:HSlider id="SliderSteve" change="{updateChart(event,1)}" liveDragging="true" value="{singleData.getItemAt(1).value}" minimum="0" maximum="100" width="120"/>
</mx:HBox>
</mx:VBox>
The charts do not retains the binding after rendering. In update chart function set the new data again and render chart. Before that also set an id to the chart.
<ns1:FusionCharts id="FC1" x="10" y="10" FCChartType="Column3D" width="500">
Now in script do this:
private function updateChart(event:SliderEvent, index:Number):void{
singleData.getItemAt(index).value = String(event.value);
singleData.refresh();
FC1.FCData(singleData);
FC1.FCParams(chartparam);
FC1.FCRender();
}
Referenced from : http://www.fusioncharts.com/flex/docs/charts/Contents/case_changeData.html
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