[R-sig-Geo] avoid plot frame (bounding box) in spplot

[Carson Farmer]

Dear list,

I'm sure there is a simple solution to my question, but I've scoured
the archives and tried every combination of parameters I can think of,
and still can't find a solution. All I want to do is 'remove' the
bounding box around my spplot plots. For those of you who like
reproducible examples, try the following:

library(lattice)
data(meuse)
coordinates(meuse) <- ~x+y
spplot(meuse, zcol="zinc")

Notice the black box around the plot (with the legend below). How can
I remove this bounding box?

Thanks in advance,

Carson

P.S.

sessionInfo()
R version 2.13.1 (2011-07-08)
Platform: x86_64-pc-linux-gnu (64-bit)

locale:
 [1] LC_CTYPE=en_IE.utf8       LC_NUMERIC=C
LC_TIME=en_IE.utf8
 [3] LC_COLLATE=en_IE.utf8     LC_MONETARY=C
LC_MESSAGES=en_IE.utf8
 [5] LC_PAPER=en_IE.utf8      LC_NAME=C                 LC_ADDRESS=C
 [8] LC_TELEPHONE=C            LC_MEASUREMENT=en_IE.utf8 LC_IDENTIFICATION=C

attached base packages:
[1] grid      stats     graphics  grDevices utils     datasets
methods   base

other attached packages:
 [1] maptools_0.8-6  lattice_0.19-30 foreign_0.8-44  rgeos_0.1-4
stringr_0.4     rgdal_0.6-33
 [7] classInt_0.1-14 e1071_1.5-25    class_7.3-3     sp_0.9-80
MASS_7.3-13

loaded via a namespace (and not attached):
[1] plyr_1.5.2   tools_2.13.1