Question

我需要在JFreechart中的Timeseries上获得A钻石形状，但我无法做到。有人可以指导一下代码应该添加到下面的代码中以实现Diamond形状点以及如何更改线条的颜色吗？

（该程序使用rs和stmt以及从DB派生的其他东西，并在其他地方定义。该程序现在正常工作，唯一的问题是它看起来非常无聊。）

TimeSeries s1 = new TimeSeries("Technology", Day.class);
TimeSeries s2 = new TimeSeries("Entertainment", Day.class);
TimeSeries s3 = new TimeSeries("Soap", Day.class);
TimeSeries s4 = new TimeSeries("Music", Day.class);
TimeSeries s5 = new TimeSeries("Native", Day.class);
TimeSeries s6 = new TimeSeries("Speciality", Day.class);
TimeSeries s7 = new TimeSeries("Science", Day.class);

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date plotdate;


if (!(combo_individualid.getModel().getSize() == 0)) {
    String sql = ""
            + "SELECT * "
            + "FROM   `customerbasetag` "
            + "WHERE  `individual_idindividual` =? ";

    try {
        stmt = conn.prepareStatement(sql);
        stmt.setString(1, combo_individualid.getSelectedItem().toString());
        rs = stmt.executeQuery();

        while (rs.next()) {

            try {
                plotdate = sdf.parse(rs.getString("session_date"));

                s1.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("technology"))));
                s2.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("entertainment"))));
                s3.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("soap"))));
                s4.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("music"))));
                s5.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("native"))));
                s6.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("speciality"))));
                s7.add(new Day(plotdate), new Integer(Integer.parseInt(rs.getString("science"))));


            } catch (ParseException ex) {
                JOptionPane.showMessageDialog(null,
                    "Parse Exception" + ex.getMessage());
            }
        }
    } catch (SQLException ex) {
        JOptionPane.showMessageDialog(null,
            "Error During Session Select" + ex.getMessage());
    }


    /*NOTE: Chart plotting here*/
    TimeSeriesCollection dataset = new TimeSeriesCollection();
    dataset.addSeries(s1);
    dataset.addSeries(s2);
    dataset.addSeries(s3);
    dataset.addSeries(s4);
    dataset.addSeries(s5);
    dataset.addSeries(s6);
    dataset.addSeries(s7);
    JFreeChart chart = ChartFactory.createTimeSeriesChart(
        "TS Chart", "Date", "Value", dataset, true, true, false);

    XYPlot plot = (XYPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
    plot.setDomainCrosshairVisible(true);
    plot.setRangeCrosshairVisible(true);

    ChartFrame f = new ChartFrame("Individual Choice Evaluation", chart);
    f.setVisible(true);
    f.setSize(800, 600);
    f.setLocationRelativeTo(null);

} else {

    JOptionPane.showMessageDialog(null, "Please Select an Individual");
}

我已经更新了代码，但它仍然无法正常工作，并且我不断恢复旧图表。这是代码。

TimeSeriesCollection dataset = new TimeSeriesCollection();
            dataset.addSeries(s1);
            dataset.addSeries(s2);
            dataset.addSeries(s3);
            dataset.addSeries(s4);
            dataset.addSeries(s5);
            dataset.addSeries(s6);
            dataset.addSeries(s7);
            JFreeChart chart = ChartFactory.createTimeSeriesChart("Time Series Chart for Individual id: "+combo_individualid.getSelectedItem().toString() , "Date", "Value", dataset, true, true, false);



            Shape theShape = ShapeUtilities.createDiamond(1);


            XYPlot plot = (XYPlot) chart.getPlot();
            plot.setBackgroundPaint(Color.lightGray);
            plot.setDomainGridlinePaint(Color.white);
            plot.setRangeGridlinePaint(Color.white);
            plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
            plot.setDomainCrosshairVisible(true);
            plot.setRangeCrosshairVisible(true);



            XYItemRenderer renderer = plot.getRenderer();

            renderer.setSeriesShape(0, theShape);
            renderer.setSeriesShape(1, theShape);
            renderer.setSeriesShape(2, theShape);
            renderer.setSeriesShape(3, theShape);
            renderer.setSeriesShape(4, theShape);
            renderer.setSeriesShape(5, theShape);
            renderer.setSeriesShape(6, theShape);





            ChartFrame f = new ChartFrame("Individual Choice Evaluation", chart);
            f.setVisible(true);
            f.setSize(800, 600);
            f.setLocationRelativeTo(null);

Answer 1

ShapeUtilities.createDiamond()可以创造钻石形状;您可以按照其他Shape的{{3}}中所示应用它。

附录：默认情况下，createTimeSeriesChart()会创建一个XYLineAndShapeRenderer，您可以修改，如下所示和example。

XYPlot plot = (XYPlot) chart.getPlot();
XYLineAndShapeRenderer r = (XYLineAndShapeRenderer) plot.getRenderer();
r.setSeriesShape(0, ShapeUtilities.createDiamond(5));
r.setSeriesShapesVisible(0, true);

here：

import java.awt.Dimension;
import java.util.Random;
import javax.swing.JFrame;
import org.jfree.chart.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.time.Day;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.util.ShapeUtilities;

/** @see https://stackoverflow.com/a/14822991/230513 */
public class Test {

    private static final int N = 16;
    private static final Random random = new Random();

    private static XYDataset createDataset() {

        final TimeSeries series = new TimeSeries("Data");
        Day current = new Day();
        for (int i = 0; i < N; i++) {
            series.add(current, Math.abs(random.nextGaussian()));
            current = (Day) current.next();
        }
        return new TimeSeriesCollection(series);
    }

    private static JFreeChart createChart(final XYDataset dataset) {
        JFreeChart chart = ChartFactory.createTimeSeriesChart(
            "Test", "Day", "Value", dataset, false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        XYLineAndShapeRenderer r = (XYLineAndShapeRenderer) plot.getRenderer();
        r.setSeriesShape(0, ShapeUtilities.createDiamond(5));
        r.setSeriesShapesVisible(0, true);
        return chart;
    }

    public static void main(String[] args) {

        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        XYDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);
        ChartPanel chartPanel = new ChartPanel(chart) {

            @Override
            public Dimension getPreferredSize() {
                return new Dimension(630, 480);
            }
        };
        f.add(chartPanel);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }
}

如何在JFreechart中获得点的钻石形状

1 个答案: