[R] fitting a line to a logaritmic plot

John Kane jrkrideau at yahoo.ca
Thu Nov 22 16:01:05 CET 2007

Could you calculate the log values of the two
sections, fit the line, and use lines() to draw them?

--- Joren Heit <jorenheit at gmail.com> wrote:

> Hi,
> I have processed measurements of a rough surface to
> a heigh-height
> correlation plot. What the meaning of this exactly
> is, is not important.
> Only that it is a plot that had two (almost ) linear
> parts when plotted on a
> logaritmic scale. In this plot, I want to draw the
> best fitting lines for
> these linear parts but I just can't get it done. It
> is easy when the scales
> are linear but as you might have imagined, the
> scales being logarithmic
> don't add to the simplicity of my problem.
> Thanks in advance!
> Joren
> 	[[alternative HTML version deleted]]
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