[R] Contour plot overlayed with line plot

[Jonathan Greenberg]

I apologize for what may be a newbie question: I have two sets of data, one
is X,Y,Z data that I'd like to make a contour plot of (Z defining the
contours), and a second set of X,Y data (Y as a function of X) which I would
like made into a line plot OVERLAYED on the contour plot (X and Y from both
plots are in the same units and will have overlapping values).  Any
suggestions on how to do this in R?  Thanks!

--j 

-- 
Jonathan A. Greenberg, PhD
NRC Research Associate
NASA Ames Research Center
MS 242-4
Moffett Field, CA 94035-1000
650-604-5896
AIM: jgrn307
MSN: jgrn307 at hotmail.com