How to generate chart data source on the fly?

Guest · Post by **Guest** » Fri Jun 09, 2006 11:57 pm

I've been looking at all the examples and it seems the chart data source is always created by the Java code. I was hoping to some how come up with an expression that would give me a source appropriate for a Pie chart to hand to a drawable fieldd expression. I have some counts of groups I would like to show in the Header as a pie chart showing the distribution of items in the various groups.

I found some references to PieChartCollectorFunction in the pdf but I have not been able to find these class files in a jar, supporting jars, ext jars.

Anyone else done this? Did you write your own Collector function? Does everyone pretty much define the chart in the java? I would really much rather describe what data to collect and how to draw the chart in the report definition.

Feel free to let me know I'm a nut or an idiot. I'm ok with that.

Mimil · Post by **Mimil** » Tue Jul 04, 2006 10:39 am

Hi,

this class is from the Pentaho distribution, so I guess you have to download the Pentaho Report distribution : http://www.pentaho.org

keene · Post by **keene** » Fri Jul 28, 2006 1:53 pm

Not sure I fully understand your question. If you are asking whether or not it is possible to dynamically change the values of the pieces of your pie chart the answer is yes.

Simply create your dataset object in the java code, and when you update the dataset the PieChart will automatically update.