Steema Central

Hi,

Thanks for your reply to my previous query. I have a different issue now.
I am getting the below mentioned exception when I tried to add large number of points to a line chart. I have seen a similar query in the forum.
I am also using a dual core machine. Is this because of the machine type or something else ? If the number of points are small then I am able to create a line chart.

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 2000
at com.steema.teechart.axis.AxisDraw.addTick(AxisDraw.java:432)
at com.steema.teechart.axis.AxisDraw.drawThisLabel(AxisDraw.java:463)
at com.steema.teechart.axis.AxisDraw.internalDrawLabel(AxisDraw.java:447)
at com.steema.teechart.axis.AxisDraw.doDefaultLabels(AxisDraw.java:623)
at com.steema.teechart.axis.AxisDraw.doNotCustomLabels(AxisDraw.java:687)
at com.steema.teechart.axis.AxisDraw.doCustomLabels(AxisDraw.java:715)
at com.steema.teechart.axis.AxisDraw.draw(AxisDraw.java:1034)
at com.steema.teechart.axis.Axis.draw(Axis.java:2521)
at com.steema.teechart.axis.Axes.draw(Axes.java:410)
at com.steema.teechart.Chart.internalDraw(Chart.java:645)
at com.steema.teechart.Chart.paint(Chart.java:1807)
at com.steema.teechart.TChart.paintComponent(TChart.java:568)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.seqPaintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)


Thanks,
Varun

Hello Varun,

Sorry for the delay with this reply. We've been unable to reproduce the problem. Do you have a sample project or code that we could use to generate the error?

If the problem is a TeeChart process-cycle error then it may be that it appears more readily on a dual core machine, though the problem is most likely to be applicable to all machine types by nature.

With thanks.
Regards,
Marc Meumann

Hi,

This issue may be related to setIncrement() of TChart.

teeChartAxis.setIncrement(teeChartAxis.getMinAxisIncrement());

If my x-axis represent date values, then setting axis label increment to "min axis increment" throws this exception.

Hope that you have understood the issue now.
Now I am checking for date explicitly, is there any other way I could do this ?

Thanks,
Varun

Hello Varun,

Thanks, we can provoke a failure using teeChartAxis.setIncrement(teeChartAxis.getMinAxisIncrement()) in that way. We'll make some checks and get back to you.

Regards,
Marc

Hello Varun,

We believe we've found the cause of the problem. A fix is being tested for inclusion in the next maintenance release.

Regards,
Marc

Hi,

That is encouraging.
I have another question, Can we draw rectangles in the chart panel using mouse ?

Thanks,
Varun

Hi Varun,

Yes, you can custom draw on TeeChart's canvas as shown in Tutorial 10 - Custom drawing on the Chart Panel. For defining rectangle coordinates you could use mouse pressed and released events as shown on this thread.

Hope this helps!