[R-sig-Geo] clipping in maptools

[Sebastian Luque]

Hi,

I'm using package maptools for reading and plotting shape files, and am
looking for a way to "clip" the shapes for plotting only.  More
precisely, I need to plot only a certain region of the original shape file
by providing the N, S, E, and W latitudes and longitudes that bound the
region.  If this is not possible in maptools, can somebody please suggest
a package to do this sort of manipulation?


Thanks in advance,

-- 
Sebastian P. Luque