Marc, I would approach the problem in a different way perhaps; that when visible points are below a certain threshold[s], that you adjust the DisplayedPointCount accordingly or turn it off completely ( DisplayedPointCount = 0;). Thanks for the suggestion - I will investigate this alternative approac...

Marc,

Excellent - thank you.

-Scott

I am writing a data processing application that can have as many as 15-20 series with 100000+ points per series. I am hoping to use the DownSampling function to help improve display performance when plotting these large data sets. I set up the DownSampling function using the example code from the "F...