Dear
meng,
Re:
> Hi all:
> I met a question about "lines".
>
>
> attach(cars)
>
>
> plot(dist ~ speed)
> #add the regression line to the plot
> lines(fitted(lm(dist~speed)) ~ speed)
>
>
> plot(dist ~ speed)
> #what kind of curve does the following command add to the plot?
> lines(fitted(lm(dist~speed)))
(etc..)
I guess you need the function abline(), not lines() to add a regression line.
Hoping this helps, I remain,
With best wishes,
Franklin
--
Dr. Franklin Bretschneider
Dept of Biology
Utrecht Unversity
Padualaan 8
3584 CH Utrecht
The Netherlands
f.bretschnei...@uu.nl
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