Hi,

I'm recently working on a multipage bwplot() using the lattice package. In
this context I was trying to use the panel.abline() function individually on
certain panels but not all. After some research I found the trellis.focus()
and trellis.unfocus() functions which enabled me to do something like:

     trellis.focus("panel", 1, 3)
        do.call("panel.abline", list (c(0.5, 0), col="tomato", lty=2 ))
     trellis.unfocus()

The result is quite what I expected and working properly as long I'm having
a one-page plot. It happens quite frequently though, that I'm operating with
multipage plots. In this case I'm only able to manipulate the panels of the
last page which I find quite unfortunate.

So here's my question now:

Is there any chance of using trellis methods to solve this problem or is it
necessary to dive into the deep realms of the grid package do this? Would it
make any difference if I pass the result of my bwplot() call to a trellis
object and manipulate this before plotting?

with kind regards

Vincent

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