Example: Pie Chart

A simple Pie chart is constructed in this example. Pie slice labels and colors are set and one pie slice is exploded from the center. This class extends JFrameChart , which manages the window. 

import com.imsl.chart.*;
import java.awt.Color;

public class PieEx1 extends javax.swing.JApplet {

    private JPanelChart panel;

    public void init() {
        Chart chart = new Chart(this);
        panel = new JPanelChart(chart);
        getContentPane().add(panel, java.awt.BorderLayout.CENTER);
        setup(chart);
    }

    static private void setup(Chart chart) {
        //	Create an instance of a Pie Chart
        double y[] = {10., 20., 30., 40.};
        Pie pie = new Pie(chart, y);

        //	Set the Pie Chart Title
        chart.getChartTitle().setTitle("A Simple Pie Chart");

        //	Set the colors of the Pie Slices
        PieSlice[] slice = pie.getPieSlice();
        slice[0].setFillColor(Color.red);
        slice[1].setFillColor(Color.blue);
        slice[2].setFillColor(Color.black);
        slice[3].setFillColor(Color.yellow);

        //	Set the Pie Slice Labels
        pie.setLabelType(pie.LABEL_TYPE_TITLE);
        slice[0].setTitle("Fish");
        slice[1].setTitle("Pork");
        slice[2].setTitle("Poultry");
        slice[3].setTitle("Beef");

        //	Explode a Pie Slice
        slice[0].setExplode(0.2);
    }

    public static void main(String argv[]) {
        JFrameChart frame = new JFrameChart();
        PieEx1.setup(frame.getChart());
        frame.setVisible(true);
    }
}

Output

eqn_0370

Link to Java source.