January 16, 2022

# Conductance and Resistance

Yesterday Collin Arneson asked for my reasoning on having the `r=p/f`

formula for the resistance line. After a really long time (god, is Basecamp search bad) I found this post by Damian that solidified my thinking and made me decide on this formula way back when. Then Collin came back with excellent arguments and the following summary:

…while if the discussion is r=p/f or r=p/f^2, I’ll vote for r=p/f^2, really I just think they are both problematic ways of looking at the data, and if you’re at all interested in changing how Visualizer displays this data, this (charting conductance as f^2/p and its derivative) is a way of looking at the data that I think offers the user some useful, actionable insight that is hard to access with resistance.

So after reading the original Derivative of puck conductance post on Basecamp and the argument post above, it became clear that I have to include Conductance and Conductance derivative lines. And while at it, also changing the resistance formula. So that’s exactly what I did, and you can now see all 3 lines on all of your shots:

All 3 are hidden by default and can be enabled by clicking on their title in the legend. But if you’re a Premium user, you can go to your profile and customize default visibility. Also, color, dashing, and smoothing, if you want.

If you (like me until yesterday) don’t know what this is all about, I can really recommend Collin’s latest post: Interpreting Conductance Derivative Charts.