Area chart with dynamic X-axis markers

I have two DataSets 
 
<ul class='bbc'><li>application performance measures over time (pairs float/datetime) (SQLDataSource)</li><li>software version changes (pairs string/datetime) (ScriptedDataSource)</li></ul>
I want to generate a grapth with both data mixed which can easily show performance changes over software changes. 
 
We are trying to create an area graph and set vertical markers by Javascript, but any attempt has failed. 
 
How would you do that? 
 
My code is: 
<pre class='_prettyXprint _lang-auto _linenums:0'>
function beforeGeneration( chart, icsc )
{
importPackage(Packages.org.eclipse.birt.chart.model.component.impl);
importPackage(Packages.org.eclipse.birt.chart.model.data.impl);
importPackage(Packages.org.eclipse.birt.chart.model.attribute);
importPackage(Packages.org.eclipse.birt.chart.model.attribute.impl);

var rpCtx = icsc.getExternalContext().getScriptable();
var vect = rpCtx.getPersistentGlobalVariable("releasesVector");

var size = vect.size();
var xAxis = chart.getPrimaryBaseAxes()[0];

importPackage(Packages.java.util);
importPackage(Packages.java.text);
var sdf = new SimpleDateFormat("MM/dd/yyyy HH:mm", Locale("es_ES"));

for(var i=0;i<size; i++){
var version = vect.get(i);
var d = sdf.parse(version[1]);
var cal = Calendar.getInstance();
cal.setTime(d);
var marker = MarkerLineImpl.create(xAxis, DateTimeDataElementImpl.create(cal.getTimeInMillis()));
marker.getLabel().getCaption().setValue(version[0]);
marker.getLineAttributes().getColor().set(255,0,0);
}

return;
}

</pre>
 
And the generation does not complain about anything and the graph has no markers. 
 
Any ideas?

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Comments

mwilliams

Hi,

Have you seen this example that talks about creating dynamic marker lines?

http://www.birt-exchange.org/org/devshare/designing-birt-reports/276-birt-chart-scripting:-dynamic-markers-and-datapoint-colors/