[R] trellis device

[hanx at purdue.edu]

Hello all,

I used pushViewport to create a viewport with a 9*8 layout(using layout: 
lay<-grid.layout(9,8).) In each cell, I used lattice to draw plots. In the final
output, if I used the trellis.device(),i.e., the default device, the 9*8 plots I
intend to draw seem ok in terms of the letter size and everything in each cell.
But if i try to use trellis.device("postscript",file="./conditional.ps",
color=T) to save it, once i opened it in R using system(...), everything in each
cell is not in good shape any more. How can I save the plots as it is in the
default device? Thanks so much.

Sean