lm()? Or simple geometry? lm(c(a,b) ~ c(xx[yy==a],xx[yy==b]))
will give you the slope and the intercept. Sarah On Wed, Jun 29, 2011 at 5:38 AM, Ida Dolciotti <ida.dolcio...@ufz.de> wrote: > Hello everybody, > > I have drawn a line in a x y plot that links the minimum and maximum points > in the plot > > plot(xx,yy) > > a=max(yy) > b=min(yy) > > lines(c(xx[yy==a],xx[yy==b]),c(a,b)) > > Now I would like to know if it is possible to extrapolate the characteristic > of the line (intercept and slope). > > Is it there and appropriate function for this? > > Thanks for your help! > > Ida D. > > -- -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
