andornot

Hi @andornot
You could use the Script tool or View/Logger/Script to update the custom Math function:

 
If you are looking for custom plot with measurements you can use the plot in the Script tool or similarly setting data in a Reference channel in Scope.

Thanks for your detailed and knowledgeable reply.  If I understand your post correctly, there's no way to write a script directly in a custom math channel that will display a trace that shows the peak-to-peak voltage of another scope channel.  I thought is would be as simple as entering Scope.Channel1.measure("Peak2Peak") as the script for a custom channel.  From what I gather, working with the logging solution you present above, the solution is to write a script in the logging area that writes another script for the custom math channel .  This is necessary (and please correct me if I'm wrong) because Scope.Channel1.measure("Peak2Peak") returns the value as a string and not as a floating point number.  With your help, I was able to create this demonstration showing how a voltage divider circuit containing two resistors can be solved graphically.

Thanks so much for your help ... I would have given up before I figured out this solution on my own!