search

scalala / Scalala

Scalala has been superseded by dlwh/breeze. Scalala is a high performance numeric linear algebra library for Scala, with rich Matlab-like operators on vectors and matrices; a library of numerical routines; support for plotting.
http://groups.google.com/group/scalala
GNU Lesser General Public License v2.1
298 stars 30 forks source link

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException #56

Open danielkorzekwa opened 12 years ago

danielkorzekwa commented 12 years ago

Scalala version:

org.scalala scalala_2.9.1 1.0.0.RC2

Scala version:

2.9.1 I get NullPointerException error on calling 'hist(ratingHistVec, 100)' in a loop every 100ms-1s. The ratingHistVec object is a vector of double numbers. Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at org.jfree.chart.plot.XYPlot.drawRangeGridlines(XYPlot.java:3920) at org.jfree.chart.plot.XYPlot.draw(XYPlot.java:3245) at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1235) at org.jfree.chart.ChartPanel.paintComponent(ChartPanel.java:1668) at javax.swing.JComponent.paint(JComponent.java:1029) at javax.swing.JComponent.paintChildren(JComponent.java:862) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JComponent.paintChildren(JComponent.java:862) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JComponent.paintChildren(JComponent.java:862) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JLayeredPane.paint(JLayeredPane.java:567) at javax.swing.JComponent.paintChildren(JComponent.java:862) at javax.swing.JComponent.paintToOffscreen(JComponent.java:5131) at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1479) at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1410) at javax.swing.RepaintManager.paint(RepaintManager.java:1224) at javax.swing.JComponent.paint(JComponent.java:1015) at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21) at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60) at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97) at java.awt.Container.paint(Container.java:1780) at java.awt.Window.paint(Window.java:3375) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:713) at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:693) at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:125) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)