Tchart is very slow while plotting large set of data

vijay · Post by **vijay** » Tue Nov 11, 2008 4:40 am

Hi,
I am using TChart wpf.
I have tried to plot 500000 points in tchart. It takes 5 to 6 seconds to plot the entire data, moreover it is very slow when i zoom or pan these points. I will have 6 or 7 lineseries with this much amount of data. Is there any way to optimize the performance?(I have history data not realtime).
Do i need to perform any filtering in my data source? But if do that while zooming user may not able see the data in second accuracy. what to do?

Any suggestions ?

Post by **Christopher** » Tue Nov 11, 2008 8:17 am

Vijay,

vijay wrote:Hi,
Do i need to perform any filtering in my data source? But if do that while zooming user may not able see the data in second accuracy. what to do?

Any suggestions ?

Two suggestions:
1) Are you using the latest version? See
http://www.teechart.net/support/viewtopic.php?t=8636
for details. You will notice that in the release notes there is mention of WPF performance enhancement.
2) Try using downsampling, as in the winform example in the Feature Demo under:
Welcome !\Functions\Extended\Reducing number of points\DownSampling Additions