A pie chart using jFreeChart
Source code name: "canvas2D_chart_pie.groovy"
Programming language: Groovy
Topic: Plots/2D
DMelt Version 1. Last modified: 07/06/2015. License: Free
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import org.jfree.chart.ChartFactory
import org.jfree.data.general.DefaultPieDataset
import java.awt.*
import jhplot.HPlotChart

def piedataset = new DefaultPieDataset();
piedataset.with {
     setValue "Apr", 10
     setValue "May", 30
     setValue "June", 40
def options = [true, true, true]
def chart = ChartFactory.createPieChart("Pie Chart",
    piedataset, *options)
chart.backgroundPaint = Color.white
def c1 = new HPlotChart( chart )