java - 使类型行(x 行)中的标签在 jfreechart 中垂直

Question

我创建了一个应用程序，将 jtable 中的数据显示到 jfreechart 中。我的jfreechart版本是折线图。截图如下:

1. 如何使字体中的标签垂直，这样看起来整齐有序
2. 如何在 session 轴值和轴类型中制作值(value)标签

这是我的代码

public class LineChartDemo1 extends ApplicationFrame {

/**
 * Creates a new demo.
 *
 * @param title the frame title.
 */
List<ReportChart> theDatas;

public LineChartDemo1(final String title, List<ReportChart> chartData) {
    super(title);

    this.theDatas = chartData;
    final CategoryDataset dataset = createDataset();
    final JFreeChart chart = createChart(dataset);
    final ChartPanel chartPanel = new ChartPanel(chart);
    chartPanel.setPreferredSize(new Dimension(500, 270));
    setContentPane(chartPanel);

    Main_Menu.presentase.removeAll(); // My form
    Main_Menu.presentase.setLayout(new java.awt.BorderLayout()); // My form
    Main_Menu.presentase.add(chartPanel); // My form
}

/**
 * Creates a sample dataset.
 *
 * @return The dataset.
 */
private CategoryDataset createDataset() {


    final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

    String algorithm1 = "Levensthein";

    String algoritma2 = "SmithWaterman";

    for (int i = 0; i < Main_Menu.jTable3.getRowCount(); i++) {

        Object fileName = Main_Menu.jTable3.getValueAt(i, 1);
        String fileNameToString = namaFile.toString();

        Object nilaiLevensthein = Main_Menu.jTable3.getValueAt(i, 2); 
        double value1 = Double.parseDouble(nilaiLevensthein.toString());

        Object nilaiSmithWaterman = Main_Menu.jTable3.getValueAt(i, 3);
        double value2 = Double.parseDouble(nilaiSmithWaterman.toString());

        dataset.addValue(value1, algoritma1, fileNameToString);
        dataset.addValue(value2, algoritma2, fileNameToString);

    }

    return dataset;

}

private JFreeChart createChart(final CategoryDataset dataset) {

    Object namaFile = Main_Menu.jTable3.getValueAt(0, 0);
    String namaFileKeString = namaFile.toString();

    // create the chart...
    final JFreeChart chart = ChartFactory.createLineChart(
            "Persentase Kemiripan", // chart title
            "File-file Pembanding", // domain axis label
            namaFileKeString, // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );

    chart.setBackgroundPaint(Color.white);

    final CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setRangeGridlinePaint(Color.white);

    // customise the range axis...
    final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
    rangeAxis.setAutoRangeIncludesZero(true);

    final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    //renderer.setDrawShapes(true);

    renderer.setSeriesStroke(
            0, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{10.0f, 6.0f}, 0.0f
            )
    );
    renderer.setSeriesStroke(
            1, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{6.0f, 6.0f}, 0.0f
            )
    );
    renderer.setSeriesStroke(
            2, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{2.0f, 6.0f}, 0.0f
            )
    );


    return chart;
}

}

非常感谢您的帮助。

edit

我成功地使x轴上的标签垂直 这是代码

 private JFreeChart createChart(final CategoryDataset dataset) {

    Object fileName = Main_Menu.jTable3.getValueAt(0, 0);
    String fileNameToString = fileName.toString();

    // create the chart...
    final JFreeChart chart = ChartFactory.createLineChart(
            "Persentation", // chart title
            "comparingFile", // domain axis label
            fileNameToString , // range axis label
            dataset, // data
            PlotOrientation.VERTICAL, // orientation
            true, // include legend
            true, // tooltips
            false // urls
    );


    chart.setBackgroundPaint(Color.white);
    ChartFactory.setChartTheme(StandardChartTheme.createDarknessTheme());
    ChartUtilities.applyCurrentTheme(chart);

    final CategoryPlot plot = (CategoryPlot) chart.getPlot();
    plot.setBackgroundPaint(Color.lightGray);
    plot.setRangeGridlinePaint(Color.white);

    final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
    renderer.setShapesVisible(true);
    renderer.setUseFillPaint(true);
    renderer.setBaseItemLabelsVisible(true);


    CategoryAxis catAxis = plot.getDomainAxis();

    catAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_90);
    //catAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 16.0));


    renderer.setSeriesStroke(
            0, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{10.0f, 6.0f}, 0.0f
            )
    );
    renderer.setSeriesStroke(
            1, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{6.0f, 6.0f}, 0.0f
            )
    );
    renderer.setSeriesStroke(
            2, new BasicStroke(
                    2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND,
                    1.0f, new float[]{2.0f, 6.0f}, 0.0f
            )
    );
    // OPTIONAL CUSTOMISATION COMPLETED.

    return chart;
}

现在，第 2 点对我来说仍然是个谜 “如何在 session 中制作值轴值和轴类型的标签？”

Answer 1

1. 在域轴上调用setVerticalTickLabels()，如图here .

2. 创建自定义XYItemLabelGenerator，如图here ，或 CategoryItemLabelGenerator，如图 here .