I'm still having problems trying to chart four physiological waves in real time. Very occasionally I get the following exception: System.IndexOutOfRangeException was unhandled Message="Index was outside the bounds of the array." Source="TeeChart" StackTrace: at Steema.TeeChart.Styles.ValueList.get_I...

Thanks for your help. I'll try it in the next couple of days.

The URL is:

http://www.berneda.com/publicnews/steem ... 000000.htm

Andy

Dear Narcis, I'm having a problem writing data to four fastline data sets on four separate charts on a single UI. I'm basicallly solving simultaneous equations very frequently (5msec) and then writing the output to a graph. My problem sounds very similar to that reported by Dimitri Goethals in the v...

Thank's for your prompt reply it was a great help.

On my system, installing the current version (TeeChartNET3VSNET2008.exe 25/03/2009) prevents the addition of any further items to the toolbox. VS closes after a few seconds. Uninstalling TeeChart fixes the problem. Im using VS2008 with SP1 running under XP with SP3. I get the same behaviour under x6...

Dear Narcis, Sorry for the delay. The assemblies for the project are quite large (~ 5-10Mb), does that matter? The application stops painting somewhere between 5 to 20 minutes after initiation. No exceptions are thrown, but if you turn on the debugger in the ontickTimer event, you see that the data ...

Dear Narcis, I'm perplexed! When I comment out timer1 and use the threaded timer ie: //timer1.Enabled = true; //waveformtimerThread.Start(); waveformtimer.Start(); The application does not paint the data points unless you break and restart execution! Is that not the same with you? Andy

Dear Narcis,

I've posted the new zip file.

I'm not sure if Multimedia.dll is in the right place for compilation, but it is included.

Many thanks,
Andy

Footnote: I've now been able to delegate fastline.add, but the problem still persists when I use a multi-threaded timer (even at low clock frequencies).

Dear Narcis, I'm developing an application which charts four channels of real-time data physiological waveform data every 20 msecs. (At the same time, the application is also solving a series of differential equations. ) When run under XP it works fine, but under Vista it occasionally stops painting...

Dear Narcis, I've submitted the 2 files. When the axis is plotted the thread running in the 4th processor represents the plotting activity. In contrast, when the axis is set to not visible, the thread activity is much less (the 8th processor). I'll try and put together a demo. In essence I'm using a...

Dear Narcis, Thanks for your prompt reply. Doing what you say really doesn't do much. (Although not all the calls mentioned are available in the dotnet version.) I'm not sure how to attach the images of CPU usage in order to show you, but basically on a dual quad-core xeon system running under XP wi...

I'm plotting waveform data every 5 msecs. If the Y axis is not visible a single CPU can handle it quite easily. If I make the Y axis visible, CPU usage approximately doubles. Is this a bug or a feature?

Many Thanks.