在下面的代码中，我正在进行一个实验，我需要每秒绘制近 10 个图表（时间间隔 100），总共 50 个图表。但是，当我减少时间间隔时时间间隔（第 120 行向下到底部）从 200 毫秒到 100 毫秒，代码引发下面的异常。
我已经厌倦了 invokeLater 等，但我无法解决这个问题。我将生成下图的完整代码粘贴到此处。请看一下并让我知道该怎么做。提前致谢
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Series index out of bounds
at org.jfree.data.xy.XYSeriesCollection.getSeries(XYSeriesCollection.java:261)
at org.jfree.data.xy.XYSeriesCollection.getSeriesKey(XYSeriesCollection.java:303)
at org.jfree.chart.labels.AbstractXYItemLabelGenerator.createItemArray(AbstractXYItemLabelGenerator.java:268)
at org.jfree.chart.labels.AbstractXYItemLabelGenerator.generateLabelString(AbstractXYItemLabelGenerator.java:238)
at org.jfree.chart.labels.StandardXYToolTipGenerator.generateToolTip(StandardXYToolTipGenerator.java:165)
at org.jfree.chart.renderer.xy.AbstractXYItemRenderer.addEntity(AbstractXYItemRenderer.java:1747)
at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawSecondaryPass(XYLineAndShapeRenderer.java:1196)
at org.jfree.chart.renderer.xy.XYLineAndShapeRenderer.drawItem(XYLineAndShapeRenderer.java:918)
at org.jfree.chart.plot.XYPlot.render(XYPlot.java:3776)
at org.jfree.chart.plot.XYPlot.draw(XYPlot.java:3337)
at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1226)
at org.jfree.chart.ChartPanel.paintComponent(ChartPanel.java:1612)
at javax.swing.JComponent.paint(JComponent.java:1054)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5221)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1508)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1439)
at javax.swing.RepaintManager.paint(RepaintManager.java:1236)
at javax.swing.JComponent._paintImmediately(JComponent.java:5169)
at javax.swing.JComponent.paintImmediately(JComponent.java:4980)
at javax.swing.RepaintManager$3.run(RepaintManager.java:796)
at javax.swing.RepaintManager$3.run(RepaintManager.java:784)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:784)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:757)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:706)
at javax.swing.RepaintManager.access$1000(RepaintManager.java:62)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1647)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.Ellipse2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.ShapeUtilities;
public class FastChart extends JFrame {
private XYSeries [] xySeries ;
private XYPlot xyPlot;
private XYSeriesCollection xySeriesCollection;
private String title;
private ChartPanel chartPanel;
public FastChart(String s) {
super(s);
init(s);
}
private void init(String s){
title = s;
xySeries = new XYSeries[12];
for (int i = 0; i < xySeries.length; i++) {
xySeries[i] = new XYSeries("Plot "+i);
}
xySeriesCollection = new XYSeriesCollection();
JFreeChart chart = ChartFactory.createScatterPlot(
title, "X", "Y", xySeriesCollection,
PlotOrientation.VERTICAL, true, true, false);
xyPlot = chart.getXYPlot();
xyPlot.setDomainCrosshairVisible(true);
xyPlot.setRangeCrosshairVisible(true);
chartPanel = createChartPanel(chart);
add(chartPanel, BorderLayout.CENTER);
JPanel control = new JPanel();
add(control, BorderLayout.SOUTH);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
pack();
setLocationRelativeTo(null);
setVisible(true);
}
private ChartPanel createChartPanel(JFreeChart chart) {
XYItemRenderer renderer = xyPlot.getRenderer();
renderer.setSeriesPaint(0, Color.magenta);
renderer.setSeriesPaint(1, Color.green);
renderer.setSeriesPaint(2, Color.blue);
renderer.setSeriesPaint(4, Color.black);
renderer.setSeriesPaint(3, Color.yellow);
Shape cross = ShapeUtilities.createDiagonalCross(3, 0);
Shape plus = ShapeUtilities.createRegularCross(4,0);
for (int i = 0; i <=3; i++) {
renderer.setSeriesShape(0+i, new Rectangle(-1, -1, 2, 2));
renderer.setSeriesShape(4+i, new Ellipse2D.Float(-2F, -2F, 5F, 5F));
renderer.setSeriesShape(8+i, cross);
}
// X axis
NumberAxis domain = (NumberAxis) xyPlot.getDomainAxis();
domain.setVerticalTickLabels(true);
// Y axis
return new ChartPanel(chart);
}
public void plot2d( final int iSeriesN, final double [] dX, final double [] dY, final String sT){
if (dY.length != dX.length){
throw new IllegalArgumentException("Error! inputs x and y have to be of same size.");
}
chartPanel.getChart().removeChangeListener((ChartChangeListener) chartPanel);
xySeries[iSeriesN].clear();
xySeriesCollection.removeAllSeries();
xySeries[iSeriesN]= addXY(iSeriesN, dX, dY);
xySeries[iSeriesN].setKey(sT);
for (int i = 0; i < xySeries.length; i++) {
xySeriesCollection.addSeries(xySeries[i]);
}
chartPanel.getChart().addChangeListener((ChartChangeListener) chartPanel);
xyPlot.setDataset(xySeriesCollection);
}
public XYSeries addXY(final int iSeriesN, final double [] dX, final double [] dY){
XYSeries series = new XYSeries("Plot ");
for (int i = 0; i < dX.length; i++) {
series.add(dX[i], dY[i]);
}
return series;
}
public void animatePlot(){
Thread thread = null;
thread = new Thread (){
public void run() {
final double [] x = new double[1000];
final double [] y = new double[1000];
try{
for (int k = 1; k < 50; k++) {
try {
Thread.sleep(200); //**** TIME INTERVAL *****
} catch (InterruptedException e) {
e.printStackTrace();
}
for (int i = 0; i < y.length; i++) {
x[i] = i;
y[i] = i*i*k;
}
plot2d(k % 12, x, y,"plot#"+k);
}
} catch (Exception e){
System.out.println();
}
}
};
thread.start();
}
public static void main(String args[]) {
FastChart demo = new FastChart("X Y Plot");
demo.animatePlot();
}
}
您正在更新模型Thread thread。要在 EDT 上更新，请使用javax.swing.Timer， 如图所示here, or SwingWorker， 如图所示here.
附录：为了验证假设，我添加了以下内容javax.swing.Timer to init().
Timer t = new Timer(200, new ActionListener() {
int k = 0;
@Override
public void actionPerformed(ActionEvent e) {
if (k++ < 19) {
final double[] x = new double[1000];
final double[] y = new double[1000];
for (int i = 0; i < y.length; i++) {
x[i] = i;
y[i] = i * i * k;
}
plot2d(k % 12, x, y, "plot#" + k);
}
}
});
t.start();
我也用过invokeLater() in main().
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
FastChart demo = new FastChart("X Y Plot");
}
});
