在JFreeChart中删除x轴日期值

时间：2015-03-03 17:21:49

标签： java swing jfreechart

我是JFreeChart的新手，并且不知道如何解决这个问题;我不知道是否有可能做我假装的事情。问题在于，我试图在Java Swing应用程序中显示图形，我传递日期和要显示的值。日期是由用户选择的，也许不是连续的;我的意思是，如果用户选择从星期四到星期一，星期六和星期日都可以避免，并在星期四，星期五和星期一转到图表。问题是图表从星期四到星期一（星期六和星期日包括）并且在X轴上显示它们不应该。基于此example，我的课程如下：

ArrayList<StringBuffer> dates={20-02-2015,23-02-2015,24-02-2015,25-02-2015,26-02-2015};
args="tittle";
frame=(the frame where I do the call,although it's not needed in myChartPanelDemo2,just added for setting errorDialogs purpose);
ArrayList<StringBuffer> amount = {"serie1","serie2"};
myChartPanelDemo2.init(amount,args,dates,frame);

public class myChartPanelDemo2 {

    static int datasetIndex;
    private static ChartPanel chartPanel;

    public static JPanel init(ArrayList<StringBuffer> amount, String args, 
            ArrayList<StringBuffer> dates, JFrame frame) {
//*****just getting the values***********//
        datasetIndex = 0;
        int cantity = amount.size();
        int cantity2 = fechas.size();
        float[][] resultArray = new float[cantity][cantity];
        float[] result = new float[cantity2];
        for (int x = 0; x < cantity; x++) {
            for (int y = 0; y < cantity2; y++) {
                result[y] = callingDataBase.main(amount.get(x), args, dates.get(y));
            }
            for (int v = 0; v < result.length; v++) {
                resultArray[x][v] = result[v];
            }
//resultArray will be the array from where chartPanel will take the values
        }
        XYDataset roiData = createDataset(args, dates, resultArray, amount);
        JFreeChart chart = ChartFactory.createTimeSeriesChart(args, "Days",
                "Values", roiData, true, true, false);
        XYPlot plot = chart.getXYPlot();
        XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer();
        renderer.setBaseShapesVisible(true);
        chartPanel = new ChartPanel(chart);
        JPanel f = new JPanel(new BorderLayout());
        f.add(chartPanel, BorderLayout.CENTER);
        chartPanel.setHorizontalAxisTrace(true);
        chartPanel.setVerticalAxisTrace(true);
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(createTrace(), BorderLayout.SOUTH);
        f.add(panel, BorderLayout.SOUTH);
        f.setVisible(true);
        chartPanel.setSize(new Dimension(frame.getWidth(), frame.getHeight()));
        chartPanel.setMaximumSize(new Dimension(frame.getWidth(), frame.getHeight()));
        chartPanel.setPreferredSize(new Dimension(frame.getWidth(), frame.getHeight()));
        return f;
    }

    /** @see https://stackoverflow.com/a/5522583/230513 */
    private static JComboBox<String> createTrace() {
        final JComboBox<String> trace = new JComboBox<String>();
        final String[] traceCmds = {"Enable Trace", "Disable Trace"};
        trace.setModel(new DefaultComboBoxModel<String>(traceCmds));
        trace.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (traceCmds[0].equals(trace.getSelectedItem())) {
                    chartPanel.setHorizontalAxisTrace(true);
                    chartPanel.setVerticalAxisTrace(true);
                    chartPanel.repaint();
                } else {
                    chartPanel.setHorizontalAxisTrace(false);
                    chartPanel.setVerticalAxisTrace(false);
                    chartPanel.repaint();
                }
            }
        });
        return trace;
    }

    private static XYDataset createDataset(String name,
            ArrayList<StringBuffer> dates, float[][] resultArray,
            ArrayList<StringBuffer> amount) {
        TimeSeriesCollection tsc = new TimeSeriesCollection();
        for (int x = 0; x < GraficoEmpresas.size(); x++) {
            tsc.addSeries(createSeries(GraficoEmpresas.get(x).toString(), fechas,
                    resultArray, x));
        }
        return tsc;


    private static TimeSeries createSeries(String name,
            ArrayList<StringBuffer> dates, float[][] resultArray, int x) {
        final TimeSeries series = new TimeSeries(name);
        int cantity2 = dates.size();
        RegularTimePeriod t = new Day();
        for (int y = 0; y < cantity2; y++) {
            Date fecha;
            SimpleDateFormat formatoDelTexto = new SimpleDateFormat("dd-MM-yyyy");
            day = new Date();
            try {
                day = formatoDelTexto.parse(fechas.get(y).toString());
            } catch (ParseException e) {
                e.printStackTrace();
            }
            RegularTimePeriod p = new Day(day);
            series.addOrUpdate(p, resultArray[x][y]);
        }
        return series;
    }
}

我无法上传图片，信誉不足，但结果是x轴值的图表：{20-02-2015 - 21-02-2015 - 22-02-2015 - -23-02-2015 - 24-02-2015 - 25-02-2015 - 26-02-2015}在21和22之外的每个点都有数据集值，但在轴标签中添加了21和22。

我同时使用JFreechart和JCommon 1.0.16。 我想这是一个自动完成问题，但这只是一个猜测，我无法检查它是否真实。 有谁知道如何避免这种情况或者这是不可能的？ 谢谢!!

2 个答案:

答案 0 :(得分：1)

如果没有完整的示例，则很难确定，但您可以将SegmentedTimeline应用于所选DataAxis创建的ChartFactory。使用静态工厂方法newMondayThroughFridayTimeline()创建星期一到星期五SegmentedTimeline，如图here所示。您可以从图表的图中获得DataAxis的引用;或者，跳过ChartFactory并创建图表 de novo ，如图here所示。

答案 1 :(得分：1)

非常感谢你！只需添加这两行解决了问题： 来源是：this example ValueAxis domainAxis = plot.getDomainAxis(); ((DateAxis) domainAxis).setTimeline( SegmentedTimeline.newMondayThroughFridayTimeline() );

整个班级将是：

public class myChartPanelDemo2 {

static int datasetIndex;
private static ChartPanel chartPanel;

public static JPanel init(ArrayList<StringBuffer> amount, String args, 
        ArrayList<StringBuffer> dates, JFrame frame) {

// *****只获取值*********** // 

     datasetIndex = 0;
    int cantity = amount.size();
    int cantity2 = fechas.size();
    float[][] resultArray = new float[cantity][cantity];
    float[] result = new float[cantity2];
    for (int x = 0; x < cantity; x++) {
        for (int y = 0; y < cantity2; y++) {
            result[y] = callingDataBase.main(amount.get(x), args, dates.get(y));
        }
        for (int v = 0; v < result.length; v++) {
            resultArray[x][v] = result[v];
        }

// resultArray将是chartPanel将取值

的数组 
 }
    XYDataset roiData = createDataset(args, dates, resultArray, amount);
    JFreeChart chart = ChartFactory.createTimeSeriesChart(args, "Days",
            "Values", roiData, true, true, false);
    XYPlot plot = chart.getXYPlot();
    XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer();
    renderer.setBaseShapesVisible(true);
ValueAxis domainAxis = plot.getDomainAxis();
 ((DateAxis) domainAxis).setTimeline( SegmentedTimeline.newMondayThroughFridayTimeline() );
    chartPanel = new ChartPanel(chart);
    JPanel f = new JPanel(new BorderLayout());
    f.add(chartPanel, BorderLayout.CENTER);
    chartPanel.setHorizontalAxisTrace(true);
    chartPanel.setVerticalAxisTrace(true);
    JPanel panel = new JPanel(new BorderLayout());
    panel.add(createTrace(), BorderLayout.SOUTH);
    f.add(panel, BorderLayout.SOUTH);
    f.setVisible(true);
    chartPanel.setSize(new Dimension(frame.getWidth(), frame.getHeight()));
    chartPanel.setMaximumSize(new Dimension(frame.getWidth(), frame.getHeight()));
    chartPanel.setPreferredSize(new Dimension(frame.getWidth(), frame.getHeight()));
    return f;
}

/** @see https://stackoverflow.com/a/5522583/230513 */
private static JComboBox<String> createTrace() {
    final JComboBox<String> trace = new JComboBox<String>();
    final String[] traceCmds = {"Enable Trace", "Disable Trace"};
    trace.setModel(new DefaultComboBoxModel<String>(traceCmds));
    trace.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            if (traceCmds[0].equals(trace.getSelectedItem())) {
                chartPanel.setHorizontalAxisTrace(true);
                chartPanel.setVerticalAxisTrace(true);
                chartPanel.repaint();
            } else {
                chartPanel.setHorizontalAxisTrace(false);
                chartPanel.setVerticalAxisTrace(false);
                chartPanel.repaint();
            }
        }
    });
    return trace;
}

private static XYDataset createDataset(String name,
        ArrayList<StringBuffer> dates, float[][] resultArray,
        ArrayList<StringBuffer> amount) {
    TimeSeriesCollection tsc = new TimeSeriesCollection();
    for (int x = 0; x < GraficoEmpresas.size(); x++) {
        tsc.addSeries(createSeries(GraficoEmpresas.get(x).toString(), fechas,
                resultArray, x));
    }
    return tsc;


private static TimeSeries createSeries(String name,
        ArrayList<StringBuffer> dates, float[][] resultArray, int x) {
    final TimeSeries series = new TimeSeries(name);
    int cantity2 = dates.size();
    RegularTimePeriod t = new Day();
    for (int y = 0; y < cantity2; y++) {
        Date fecha;
        SimpleDateFormat formatoDelTexto = new SimpleDateFormat("dd-MM-yyyy");
        day = new Date();
        try {
            day = formatoDelTexto.parse(fechas.get(y).toString());
        } catch (ParseException e) {
            e.printStackTrace();
        }
        RegularTimePeriod p = new Day(day);
        series.addOrUpdate(p, resultArray[x][y]);
    }
    return series;
}

}

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