【发布时间】：2015-03-05 22:11:23
【问题描述】：
我是JFreeChart 的新手，不知道如何解决这个问题；我也不知道是否有可能做我假装的事情。问题是这样的，我试图在 Java Swing 应用程序中显示一个图表，我传递了要显示的日期和值。日期是由用户选择的，并且可能不是连续的；我的意思是，如果用户从星期四到星期一选择，则避免星期六和星期日并传递到图表星期四、星期五和星期一。问题是图表从星期四到星期一（包括星期六和星期天）并在 X 轴上显示它们，而它不应该显示它们。基于这个example，我的班级如下：
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，声誉不够，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} 除了 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，我无法检查它是否正确。 有谁知道如何避免这种情况或这是不可能的？ 谢谢！！
【问题讨论】：
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交叉发布here.
标签： java swing jfreechart