[R] Origin label in lattice

[Andrew Smith]

I would like to make what seems like a simple addition to a display
constructed from a call to levelplot -- I want to add a text label
(which will, in general, depend on the object being plotted, and so
cannot be hardcoded) to the origin, which has special significance in
my problem.  The x and y axes always have range (0,1) in my plots, so
by "origin" I always mean the lower left corner of the plot.  Now, I
can add text to the inside of the panel using panel.text, but this
clutters the plot and I find it unsatisfactory.  What I would like is
to add the label outside of the panel, just below and to the left of
the lower left corner of the panel.  I've unsuccessfully tried to do
this using the xscale.components argument, and I'm having trouble
figuring out which other arguments or functions might be helpful.  I
would greatly appreciate any advice!

Thanks,

Andrew Smith

Georgia Tech
School of Industrial and Systems Engineering