java - 在 CombinedDomainXYPlot 中创建标记/十字线

Question

我想在 CombinedDomainXYPlot 中显示一个标记。这是行不通的。我可以为每个子图添加标记。但我想为 CombinedDomainXYPlot 添加它。任何人都可以告诉我有关此问题的信息。我认为十字准线的行为是相同的。

这是创建 CombinedDomainXYPlot 并尝试添加标记的工作示例。添加标记在createCombinedChart()

import java.awt.Font;

import javax.swing.JPanel;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.annotations.XYTextAnnotation;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.IntervalMarker;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A demonstration application showing how to create a combined chart.
 */
public class MarkerDemo2 extends ApplicationFrame {

/**
 * Constructs a new demonstration application.
 *
 * @param title  the frame title.
 */
public MarkerDemo2(String title) {

    super(title);
    JFreeChart chart = createCombinedChart();
    ChartPanel panel = (ChartPanel) createDemoPanel();
    panel.setPreferredSize(new java.awt.Dimension(500, 270));
    setContentPane(panel);

}

/**
 * Creates a combined chart.
 *
 * @return The combined chart.
 */
private static JFreeChart createCombinedChart() {

    // create subplot 1...
    XYDataset data1 = createDataset1();
    XYItemRenderer renderer1 = new StandardXYItemRenderer();
    NumberAxis rangeAxis1 = new NumberAxis("Range 1");
    XYPlot subplot1 = new XYPlot(data1, null, rangeAxis1, renderer1);
    subplot1.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);

    // add secondary axis
    subplot1.setDataset(1, createDataset2());
    NumberAxis axis2 = new NumberAxis("Range Axis 2");
    axis2.setAutoRangeIncludesZero(false);
    subplot1.setRangeAxis(1, axis2);
    subplot1.setRangeAxisLocation(1, AxisLocation.BOTTOM_OR_RIGHT);
    subplot1.setRenderer(1, new StandardXYItemRenderer());
    subplot1.mapDatasetToRangeAxis(1, 1);

    XYTextAnnotation annotation = new XYTextAnnotation("Hello!", 50.0, 10000.0);
    annotation.setFont(new Font("SansSerif", Font.PLAIN, 9));
    annotation.setRotationAngle(Math.PI / 4.0);
    subplot1.addAnnotation(annotation);

    // create subplot 2...
    XYDataset data2 = createDataset2();
    XYItemRenderer renderer2 = new StandardXYItemRenderer();
    NumberAxis rangeAxis2 = new NumberAxis("Range 2");
    rangeAxis2.setAutoRangeIncludesZero(false);
    XYPlot subplot2 = new XYPlot(data2, null, rangeAxis2, renderer2);
    subplot2.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);

    // parent plot...
    CombinedDomainXYPlot plot = new CombinedDomainXYPlot(new NumberAxis("Domain"));
    plot.setGap(10.0);

    // add the subplots...
    plot.add(subplot1, 1);
    plot.add(subplot2, 1);
    plot.setOrientation(PlotOrientation.VERTICAL);

    // Add marker
    Marker marker = new IntervalMarker(30, 40);
    plot.addDomainMarker(marker);
    // Working
    // subplot1.addDomainMarker(marker);

    // return a new chart containing the overlaid plot...
    JFreeChart chart = new JFreeChart("CombinedDomainXYPlot Demo",
            JFreeChart.DEFAULT_TITLE_FONT, plot, true);
    ChartUtilities.applyCurrentTheme(chart);
    return chart;

}

/**
 * Creates a sample dataset.
 *
 * @return Series 1.
 */
private static XYDataset createDataset1() {

    // create dataset 1...
    XYSeries series1 = new XYSeries("Series 1a");
    series1.add(10.0, 12353.3);
    series1.add(20.0, 13734.4);
    series1.add(30.0, 14525.3);
    series1.add(40.0, 13984.3);
    series1.add(50.0, 12999.4);
    series1.add(60.0, 14274.3);
    series1.add(70.0, 15943.5);
    series1.add(80.0, 14845.3);
    series1.add(90.0, 14645.4);
    series1.add(100.0, 16234.6);
    series1.add(110.0, 17232.3);
    series1.add(120.0, 14232.2);
    series1.add(130.0, 13102.2);
    series1.add(140.0, 14230.2);
    series1.add(150.0, 11235.2);

    XYSeries series1b = new XYSeries("Series 1b");
    series1b.add(10.0, 15000.3);
    series1b.add(20.0, 11000.4);
    series1b.add(30.0, 17000.3);
    series1b.add(40.0, 15000.3);
    series1b.add(50.0, 14000.4);
    series1b.add(60.0, 12000.3);
    series1b.add(70.0, 11000.5);
    series1b.add(80.0, 12000.3);
    series1b.add(90.0, 13000.4);
    series1b.add(100.0, 12000.6);
    series1b.add(110.0, 13000.3);
    series1b.add(120.0, 17000.2);
    series1b.add(130.0, 18000.2);
    series1b.add(140.0, 16000.2);
    series1b.add(150.0, 17000.2);

    XYSeriesCollection collection = new XYSeriesCollection();
    collection.addSeries(series1);
    collection.addSeries(series1b);
    return collection;

}

/**
 * Creates a sample dataset.
 *
 * @return A sample dataset.
 */
private static XYDataset createDataset2() {

    // create dataset 2...
    XYSeries series2 = new XYSeries("Series 2");

    series2.add(10.0, 6853.2);
    series2.add(20.0, 9642.3);
    series2.add(30.0, 8253.5);
    series2.add(40.0, 5352.3);
    series2.add(50.0, 3532.0);
    series2.add(60.0, 2635.3);
    series2.add(70.0, 3998.2);
    series2.add(80.0, 1943.2);
    series2.add(90.0, 6943.9);
    series2.add(100.0, 7843.2);
    series2.add(105.0, 6495.3);
    series2.add(110.0, 7943.6);
    series2.add(115.0, 8500.7);
    series2.add(120.0, 9595.9);

    return new XYSeriesCollection(series2);

}

/**
 * Creates a panel for the demo (used by SuperDemo.java).
 *
 * @return A panel.
 */
public static JPanel createDemoPanel() {
    JFreeChart chart = createCombinedChart();
    ChartPanel panel = new ChartPanel(chart);
    panel.setMouseWheelEnabled(true);
    return new ChartPanel(chart);
}

/**
 * Starting point for the demonstration application.
 *
 * @param args  ignored.
 */
public static void main(String[] args) {

    MarkerDemo2 demo = new MarkerDemo2(
            "JFreeChart: CombinedDomainXYPlotDemo4.java");
    demo.pack();
    RefineryUtilities.centerFrameOnScreen(demo);
    demo.setVisible(true);

}

}

Answer 1

drawAnnotations 在XYPlot 中实现，不幸的是CombinedDomainXYPlot 子类XYPlot 但没有调用drawAnnotations 在其重写的 draw 实现中或将注释转发到子图中。

您可以通过子类化 CombinedDomainXYPlot 来提供 addAnnotation 和 removeAnnotation 的实现。