Add a line chart beneath an existing pie chart

问题

When I click on a section of my piechart, I would like to see under first chart another chart (line chart). Now I generated another panel chart, but I lost first panel, because the second chart paint on first panel and second paint a first chart, but second has bad dimension; see image.

How i can adjust my problem?

JFreeChart chart = ChartFactory.createPieChart("Pratiche complessive",
            dataset, true, true, false);
    ChartPanel chartPanel = new ChartPanel(chart);
    chartPanel.setPreferredSize(new java.awt.Dimension(560, 370));
    PiePlot plot = (PiePlot) chart.getPlot();

    PieSectionLabelGenerator gen = new StandardPieSectionLabelGenerator(
            "{1} pratica/che");
    plot.setLabelFont(new Font("Courier New", Font.BOLD, 10));
    plot.setLabelLinkPaint(Color.BLACK);
    plot.setLabelLinkStroke(new BasicStroke(1.0f));
    plot.setLabelOutlineStroke(null);
    plot.setLabelPaint(Color.BLUE);
    plot.setLabelBackgroundPaint(null);
    plot.setLabelGenerator(gen);
    chart.setBackgroundPaint(Color.orange);
    chartPanel.addChartMouseListener(this);
    this.setContentPane(chartPanel);
}

public void chartMouseClicked(ChartMouseEvent event) {

    ChartEntity entity = event.getEntity();
    String sezione = "";
    sezione = entity.toString().substring(17);
    sezione = sezione.replace(")", "");
    System.out.println(sezione);
    // PieSection: 0, 0(ARCHIVIATO)===>ARCHIVIATO V
    if (entity != null) {

        try {
            String query = query;

            String numero_pratiche = "";
            String nome_stato = "";
            String data_modifica;

            stmt = conn.prepareStatement(query);
            rs = stmt.executeQuery();
            DefaultCategoryDataset dataset = new DefaultCategoryDataset();
            while (rs.next()) {
                dataset
            }
            // System.out.println(entity.toString());

            JFreeChart lineChart = ChartFactory.createLineChart("Pratiche", "Data", "Pratiche", dataset, PlotOrientation.VERTICAL,true, true, false);
            ChartPanel pannello_dettaglio = new ChartPanel(lineChart);
            pannello_dettaglio.setPreferredSize(new java.awt.Dimension(560,367));
            this.setContentPane(pannello_dettaglio);
             JfreeChart dettaglio = new JfreeChart("Dettaglio");
            pannello_dettaglio.setSize(560, 367);
            RefineryUtilities.centerFrameOnScreen(dettaglio);
            dettaglio.setVisible(true);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

//first panel(piechart)
    public static void main(String[] args) throws ClassNotFoundException,
            SQLException {
        JfreeChart demo = new JfreeChart("Pratiche complessive");
        demo.setSize(560, 367);
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

this is my first chart pie:

This is my final result:

回答1:

I would like to see one panel chart top-to-bottom.

It looks like you're replacing the entire pie chart panel with the line chart panel. Instead, add both chart panels and update the line chart's dataset in the ChartMouseListener. The listening line chart will update itself in response. In the example below, the listener updates the line chart's dataset to reflect which pie section was clicked.

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import javax.swing.JFrame;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartMouseEvent;
import org.jfree.chart.ChartMouseListener;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.entity.PieSectionEntity;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;

/** @see http://stackoverflow.com/a/36889641/230513 */
public class PieLineTest {

    private final DefaultCategoryDataset lineData = new DefaultCategoryDataset();

    public void display() {
        final DefaultPieDataset pieData = new DefaultPieDataset();
        pieData.setValue("One", 42);
        pieData.setValue("Two", 84);
        JFreeChart pieChart = ChartFactory.createPieChart(
            "Title", pieData, true, true, false);
        JFreeChart lineChart = ChartFactory.createLineChart(
            "Title", "Domain", "Range", lineData);

        JFrame f = new JFrame("Test");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLayout(new GridLayout(0, 1));
        ChartPanel piePanel = new ChartPanel(pieChart) {
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(320, 240);
            }
        };
        piePanel.addChartMouseListener(new ChartMouseListener() {
            @Override
            public void chartMouseClicked(ChartMouseEvent cme) {
                PieSectionEntity e = (PieSectionEntity) cme.getEntity();
                DefaultPieDataset d = (DefaultPieDataset) e.getDataset();
                Comparable sectionKey = e.getSectionKey();
                lineData.clear();
                lineData.addValue(1, e.toString(), "Begin");
                lineData.addValue(d.getValue(sectionKey), e.toString(), "End");
            }

            @Override
            public void chartMouseMoved(ChartMouseEvent event) {
            }
        });
        f.add(piePanel);
        f.add(new ChartPanel(lineChart));
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new PieLineTest().display();
            }
        });
    }

}

来源：https://stackoverflow.com/questions/36884734/add-a-line-chart-beneath-an-existing-pie-chart