Hello ytrainis,

Thank you for your post!

I am somewhat unsure what you mean by the word "corrupted" in this case. I am currently under the impression that the meaning here is that the trendline is being drawn cross-chart, where there are null/padded values in the chart for a particular series. If this is what you mean, please understand that this is expected behavior. The trendline on a series in the XamDataChart is based on the ItemsSource that you have bound to it, so as long as there is a data item plotted in the chart in that source collection, the trendline will be drawn for it.

The way I see this, I believe your best option to work around this would be to either use different data sources for your series, which would require you to have multiple hidden but identical axes, or you can create your own series to serve as a custom trendline. Here is a link describing how to create a custom trendline: https://www.infragistics.com/community/blogs/b/kiril_matev/posts/working-with-built-in-and-custom-logic-trendlines-in-the-xamdatachart.

It is still possible that my definition of "corrupt" is not correct on this matter though. If I am under the wrong impression, could you please provide me with more detail, a screenshot, or a sample project that demonstrates what you are referring to?

Please let me know if you have any other questions or concerns on this matter.

Sincerely,
Andrew
Associate Developer
Infragistics Inc.
www.infragistics.com/support

Sincerely,
Andrew
Associate Developer
Infragistics Inc.
https://www.infragistics.com/support

Sincerely,
Andrew
Associate Developer
Infragistics Inc.
https://www.infragistics.com/support