[R] Suppressing internal grid in filled.contour

[Jonathan Greenberg]

Rers:

	I can't seem to locate the command to suppress what appears to be a 
faint internal grid when running the following command to make a filled 
contour plot of some data I have (x,y,z being the inputs):

filled.contour(interp(x,y,z,duplicate="strip",xo=seq(1800,3200,length=57),yo=seq(120,280,length=65)),col=grey.colors(33,start=0,end=1,gamma=1),nlevels=33,zlim=0:650,plot.axes={axis(1);axis(2);points(xline,yline,type="l")})

	The output is attached to this email via pdf -- I'm using R 2.8.0 on 
MacOS X.  Thanks for any help you all can give me!

Sincerely,

Jonathan Greenberg

-- 

Jonathan A. Greenberg, PhD
Postdoctoral Scholar
Center for Spatial Technologies and Remote Sensing (CSTARS)
University of California, Davis
One Shields Avenue
The Barn, Room 250N
Davis, CA 95616
Cell: 415-794-5043
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307
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