我有一个jfreechart图表,当用户点击按钮后会出现。当用户再次点击带有不同数据集的按钮时,应该重新绘制图形。我的问题在于,即使用户第二次点击按钮后显示新图形,当用户在图形上任何其他地方单击时,新图形消失,之前的图形出现。
请帮助我解决这个问题。
这是创建图表的位置。
public JFreeChart createChart() throws FileNotFoundException, IOException {
userAligner.userRecord();
userAligner.diffVoiceText();
// aligner.roggerRecord();
//aligner.userRecord();
final CategoryDataset dataset1 = aligner.roggerRecord();
final NumberAxis rangeAxis1 = new NumberAxis("Pace - Rogger(ms)");
rangeAxis1.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
final LineAndShapeRenderer renderer1 = new LineAndShapeRenderer();
renderer1.setSeriesPaint(0, Color.blue); //int series, paint paint
renderer1.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());
final CategoryPlot subplot1 = new CategoryPlot(dataset1, null, rangeAxis1, renderer1);
subplot1.setDomainGridlinesVisible(true);
final CategoryDataset dataset2 = userAligner.createData();
dataset2.addChangeListener(subplot1);
final NumberAxis axis2 = new NumberAxis("Pace - User(ms)");
subplot1.setRangeAxis(1, axis2); //value axis
subplot1.setDataset(1, dataset2); //int index
//subplot1.mapDatasetToRangeAxis(1, 1); // int index, int axisindex
final CategoryItemRenderer renderer2 = new LineAndShapeRenderer();
renderer2.setSeriesPaint(0, Color.red);
subplot1.setForegroundAlpha(0.7f);
subplot1.setRenderer(0, renderer1);
subplot1.setRenderer(1, renderer2);
final CategoryAxis domainAxis = new CategoryAxis("Words");
// domainAxis.setMaximumCategoryLabelLines(10);
domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
final CombinedDomainCategoryPlot plot = new CombinedDomainCategoryPlot(domainAxis);
plot.add(subplot1, 1);
// plot.add(subplot2, 1);
final JFreeChart chart = new JFreeChart(
"Pace Graph", new Font("SansSerif", Font.BOLD, 14),
plot, true);
return chart;
}
public void datasetChanged(DatasetChangeEvent arg0) {
try {
createChart();
} catch (FileNotFoundException ex) {
Logger.getLogger(PaceChart.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(PaceChart.class.getName()).log(Level.SEVERE, null, ex);
}
当用户点击按钮时,以下操作会更新它。
并且每次都会进行更新。
private void viewPaceButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if (file == null){
JOptionPane.showMessageDialog(VoiceTracker.f,"Save the Voice before View Pace Graph");
}
else {
//jScrollPane2.setLayout(new java.awt.BorderLayout());
// PaceChart pc = new PaceChart();
PaceChart dac = new PaceChart();
//SymbolAxisDemo1 demo = new SymbolAxisDemo1();
ChartPanel CP;
try {
CP = new ChartPanel(dac.createChart());
paceAnalyzePanel.add(CP, BorderLayout.CENTER);
paceAnalyzePanel.validate();
} catch (FileNotFoundException ex) {
Logger.getLogger(VoiceTracker.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(VoiceTracker.class.getName()).log(Level.SEVERE, null, ex);
}
}
}