Java 在jfreechart中，使类型线（x线）中的标签垂直

我已经创建了一个应用程序，它将我在jtable中的数据显示在jfreechart中。我的jfreechart版本是折线图。屏幕截图如下所示：

如何使标签在线条上是垂直的，这样看起来就会整齐有序

如何在会议轴值中创建值标签​​和轴类型

这是我的密码

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;
}

}

我成功地使标签在x轴上垂直 这是密码

 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，第二点对我来说仍然是个谜 “如何在会议轴值中创建值标签​​轴类型是什么？”

在域轴上调用

setVerticalTickLabels（）

，如图所示

如图所示，创建自定义的

XYItemLabelGenerator

，或

CategoryItemLabelGenerator

，如图所示

---

XylineandShaperEnder和LineandShaperEnder有什么不同？除了其他的不同，

LineandShaperEnder

是一个

CategoryItemRenderer

，而

XylineandShaperEnder

是一个

XYItemRenderer

。从这个例子中，我知道这个“XylineandShaperEnder renderer渲染器=（XylineandShaperEnder）plot.getRenderer（）；renderer.setBaseItemLabelsVisible（true）；“但是我使用的是LineAndShapeRenderer，所以renderer.setBaseItemLabelsVisible（true）；不工作您将需要一个

类别项目标签生成器

。

 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;
}