Anti-log Pot track puzzler?

[pwdrive]

Hello David, if you are measuring from the slider to the bottom of a linear pot (50k) and the taper resistor is of a fixed value (8.2k) then surely you must be plotting a linear function as the top of the pot is not referenced to anything, try plotting from the top of the pot at it's junction with the taper resistor and the bottom of the pot it should plot a non linear plot on the graph.

Lawrence.