Problem with synchronization during fast graphing of several graphs

Question

In the code below, I conducted an experiment for which I need to display almost 10 graphs per second (time interval 100) for a total of 50. However, when I decrease the time interval TIME INTERVAL (line 120 down) from 200 ms to 100 ms, the code below raises an exception.

I'm tired of invokeLater, etc., but I can't fix it. I pasted here all the code that generates the graph below. Please take a look and let me know what to do. thanks in advance

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("XY Plot"); demo.animatePlot(); } } 

Answer 1

You are updating the model with Thread thread . To update EDT, use javax.swing.Timer , as shown here , or SwingWorker , as shown here .

Appendix: to test the hypothesis, I added the following 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(); 

I also used invokeLater() in main() .

 EventQueue.invokeLater(new Runnable() { @Override public void run() { FastChart demo = new FastChart("XY Plot"); } });