在现有饼图下方添加折线图

Question

当我单击饼图的某个部分时，我希望在第一个图表下看到另一个图表（折线图）。现在我生成了另一个面板图表，但我丢失了第一个面板，因为第二个图表绘制在第一个面板上，第二个绘制了第一个图表，但第二个图表的维度不好；看图片。

如何调整我的问题？

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);

    }

这是我的第一个图表派：

这是我的最终结果：

Answer 1

我想从上到下查看一个面板图。

您似乎正在用折线图面板替换整个饼图面板。相反，添加两个图表面板并更新ChartMouseListener 中的折线图数据集。监听折线图将自行更新作为响应。在下面的示例中，侦听器更新折线图的数据集以反映单击了哪个饼图部分。作为参考，它还显示了对应的ChartEntity。

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.ChartEntity;
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 {

    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);
        DefaultCategoryDataset lineData = new DefaultCategoryDataset();
        JFreeChart lineChart = ChartFactory.createLineChart(
            "Title", "Domain", "Range", lineData);
        ChartPanel piePanel = new ChartPanel(pieChart) {
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(400, 300);
            }
        };
        piePanel.addChartMouseListener(new ChartMouseListener() {
            @Override
            public void chartMouseClicked(ChartMouseEvent cme) {
                updateLineData(cme);
            }

            @Override
            public void chartMouseMoved(ChartMouseEvent cme) {
                updateLineData(cme);
            }

            private void updateLineData(ChartMouseEvent cme) {
                ChartEntity ce = cme.getEntity();
                lineChart.setTitle(ce.getClass().getSimpleName());
                lineData.clear();
                if (ce instanceof PieSectionEntity) {
                    PieSectionEntity e = (PieSectionEntity) ce;
                    DefaultPieDataset d = (DefaultPieDataset) e.getDataset();
                    Comparable sectionKey = e.getSectionKey();
                    lineData.addValue(1, e.toString(), "Begin");
                    lineData.addValue(d.getValue(sectionKey), e.toString(), "End");
                }
            }
        });
        JFrame f = new JFrame("Test");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLayout(new GridLayout(0, 1));
        f.add(piePanel);
        f.add(new ChartPanel(lineChart) {
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(320, 240);
            }
        });
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

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