The trending feature allows data to be appended to the internal chart data array.  The chart is regenerated with the added data after a Refresh call has been made.  Since the internal chart data array structure is subject to the NumSamples limit per profile, data at the beginning is dropped off to allow the new profile data to be appended.  

Once trending stops, the user can scroll through the plot (if the horizontal scrollbar is displayed), or select the Toolbar's ZoomOutAll button to display all the profiles in the plot in its complete form.


To Enable Feature

Programmatically set the Trend and the Trend Class properties to configure and enable this feature.