Hello everyone,
I'm new to Telerik and a quite beginner in C#. I would like to use ChartView to display a real-time value that I read every X milliseconds and add it to the graph. The X-axis should indicate seconds, so each point is defined in terms of X and Y. Several thousand points need to be generated and displayed. The chart should display 3 curves. 1 RealTime curve , 1 Superior Limit that is fixed, 1 Inferior Limit that is fixed.
Could someone help me get started on this? (what structure for the points, adding series). Every help is welcome.
Cheers
Massimo
2 Answers, 1 is accepted
Hello Massimo,
We have an example of this in our demo application (see attached). You can see the code in it as well.
Let me know if you have additional questions.
Regards,
Dimitar
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Rank 1
Iron
Hi Dimitar,
Thank for the info.
I built an example that mimik my actual application. 3 scatter lines generated where a new point is added every 10ms.
All this is multiplied by 4 ( 4 RadCartesianChart in my mainwindow). Until ~1500points the refresh ok but after it 's bad or even the application is not responding. With my actual free component it still works but slow. I expected much more from a professionnal component.
Am I doing something wrong ? Could you look at my code ?
Thanks for your help
Massimo
Hi Massimo,
Your approach is correct. However, such an interval is too small for the repainting of such an amount of points. You will get better results with larger intervals for example 100ms. You can try changing the render options as well: WPF ChartView - Rendering - Telerik UI for WPF.
Let me know if you have additional questions.
Hi Massimo,
Another approach you can try for such cases is using spakline. More information is available here: WPF Sparkline - Overview - Telerik UI for WPF
Rank 1
Iron
Hi Dimitar,
Sparkline will not work because you can not display axis. I will try to change the render options and will let you know.
Thanks
Massimo
Rank 1
Iron
Hi Dimitar,
I tried try to change the render options but no significant improvements. I stopped my tests and will try another library. Telerik can not achieve my expectation in terms of speed.
Thanks for your help
Massimo