> - Suppose I have a factor with quite a lot of levels. How do I split
> this factor not only along x or y axis, but rather split about both
> axis. I'm looking for the lattice layout-equivalent.
You can't (yet). You can work around it by splitting the factor into
two parts yourself.
> - If I split my data into levels and plot my measurement for every
> factor. How can I then add a line to every seperate panel with a
> different slope and a different intercept?
qplot(wt, mpg, data=mtcars, type=c("point","smooth"),
method=lm)
Hadley