Plotting graphs with JFreeChart

Added by Paul King, last edited by Paul King on Jun 21, 2007  (view change)

Inspired by the excellent BeanShell example, here is the same thing in Groovy (but displaying in a Swing window rather than writing to a file):

//require(groupId:'jfree', artifactId:'jfreechart', version:'1.0.5')
//require(groupId:'jfree', artifactId:'jcommon', version:'1.0.9')
import org.jfree.chart.ChartFactory
import org.jfree.chart.ChartPanel
import org.jfree.data.general.DefaultPieDataset
import groovy.swing.SwingBuilder
import java.awt.*
import javax.swing.WindowConstants as WC

def piedataset = new DefaultPieDataset();
piedataset.setValue "Apr", 10
piedataset.setValue "May", 30
piedataset.setValue "June", 40

def options = [true, true, true]
def chart = ChartFactory.createPieChart("Pie Chart Sample",
    piedataset, *options)
chart.backgroundPaint = Color.white
def swing = new SwingBuilder()
def frame = swing.frame(title:'Groovy PieChart',
        defaultCloseOperation:WC.EXIT_ON_CLOSE) {
    panel(id:'canvas') { widget(new ChartPanel(chart)) }
}
frame.pack()
frame.show()



Here is the result:

Or if you prefer Line Charts:

//require(groupId:'jfree', artifactId:'jfreechart', version:'1.0.5')
//require(groupId:'jfree', artifactId:'jcommon', version:'1.0.9')
import org.jfree.chart.ChartFactory
import org.jfree.chart.ChartPanel
import org.jfree.data.category.DefaultCategoryDataset
import org.jfree.chart.plot.PlotOrientation as Orientation
import groovy.swing.SwingBuilder
import javax.swing.WindowConstants as WC

def dataset = new DefaultCategoryDataset()
dataset.addValue 150, "no.1", "Jan"
dataset.addValue 210, "no.1", "Feb"
dataset.addValue 390, "no.1", "Mar"
dataset.addValue 300, "no.2", "Jan"
dataset.addValue 400, "no.2", "Feb"
dataset.addValue 200, "no.2", "Mar"

def labels = ["Bugs", "Month", "Count"]
def options = [true, true, true]
def chart = ChartFactory.createLineChart(*labels, dataset,
                Orientation.VERTICAL, *options)
def swing = new SwingBuilder()
def frame = swing.frame(title:'Groovy LineChart',
        defaultCloseOperation:WC.EXIT_ON_CLOSE) {
    panel(id:'canvas') { widget(new ChartPanel(chart)) }
}
frame.pack()
frame.show()



And the result looks like:

Additionally, you might have a look at the GroovyChart library which provides a dedicated builder interface for building charts.

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