[R] simple plotting question

[Ranjan Maitra]

Hi,

I have a very simple question which I can't see
how to figure out.

Basically, I have a matrix of plots, but I want 
no margin space in between them. I want a wide 
right margin (outside of the block of
plots) so that I can place a legend there.

I tried the following:

par("mar"=c(0,0,0,1), mfrow=c(4,4))
for (i in 8:23)  {
image(xx$ttt[2*(128:1),2*(128:1),i,1],axes=F,col=gray(0:15/15))
}

but I get a margin to the right of every 
plot.

Any ideas?

This is usually not a problem for me because I 
make each plot separately, but the journal 
requires no subfigures.

Many thanks and best wishes,
Ranjan