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How do you access a dataset from chart

newbie321

Hello, 
I have a chart element in .rptdesign file. it uses the dataset that has two columns (x,y) and are used to make the plot. 
Now depending on how many points are the dataset, I would need to dynamically adjust the properties of the chart, through the beforeGeneration() event handler or any other applicable event handler.
Question: how do I access dataset list values from within the beforeGeneration() event handler as shown below:
function beforeGeneration( chart, icsc ) 
{ 
importPackage( Packages.org.eclipse.birt.chart.model.data.impl ); 
totalPoints = ????? 
}
 
Thanks!!

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newbie321

I actually found a solution which I present below for the benefit of the community:
 
In the 
<pre class="_prettyXprint">
.beforeGeneration()</pre>
do the following:
<div style="margin:0px;color:rgb(40,40,40);font-family:'Source Sans Pro', sans-serif;">
<pre class="_prettyXprint">
data = chart.getAxes().get(0).getAssociatedAxes().get(0).getRuntimeSeries()[0].getDataSet().getValues();</pre>
The data will be of an Array type. So all you have to do is to cycle through the an array using the classic approach:
<pre class="_prettyXprint">
for (i=0; i<data.length;i++){
System.out.println(data[i]);
}</pre>
At this point of time the data corresponding to y-axis is exposed. 
</div>

JFreeman

Sorry I was not able to get to this sooner.

Thank you for providing the solution you have found for the issue. 
I am glad to hear you got it working.

Let us know if you have additional questions.