My understanding of Logarithmic Interpolation is that you now only have to enter the start and end of your straight section of curve (say 30 6.0; and 0 80.0), and the interpolation will plot a straight line for you on the horizontal logarithmic scale.
Well, I can't get it to do that. I can definitely get a straight line by using my own 8 or 10 coordinates, and no interpolation. But not using two end points and interpolation.
What am I missing?
