[R] multiple xYplots

[eesteves at ualg.pt]

Dear All,
I'm having trouble ploting multiple xYplots (Hmisc) within the same pg  
although I've done
it before w/ xyplots. I've produced 4 similar plots e.g.

rna.h<-xYplot(Cbind(RNA,Lo,Up)~HO|factor(MO,labels=c("April",
         "May","June")),data=diel.data,method="bars",type="b",
         keys="lines",pch=16,col=1,cap=.04,
         ylim=c(-0.5,6.5),xlim=c(0.1,24.6),
         xlab="Hour (local time)",ylab=expression(log(RNA)),
         layout=c(3,1),aspect=5/3)

For some time, the following commands worked fine w/ xyplots

postscript(file="G:/MyArticles/ConditionArticle/DielVars.eps",
         horiz=T,paper="a4")
print(rd.h,split=c(1,1,2,2),more=T)
print(rna.h,split=c(2,1,2,2),more=T)
print(sl.h,split=c(1,2,2,2),more=T)
print(pp.h,split=c(2,2,2,2))
dev.off()

I'd got in the end a pretty page w/ plots distributed "evenly" and  
SIMULTANEOUSLY. Now,
they're ploted sequentially (if I use the prints command lines only)  
or just the first
plot appears in the final EPS file w/ the following warning

Warning messages:
1: 'mode(horizontal)' differs between new and previous
          ==> NOT changing 'horizontal'
2: 'length(horizontal)' differs between new and previous
          ==> NOT changing 'horizontal'

Can someone help?

Thanks, Eduardo Esteves