R help - Nov 2011 - Lattice plots and missing x-axis labels on second page

Hello, 
I'm trying to make a lattice plot (using xyplot()). I have included a
"layout=c(3,4)" statement, giving me 12 plots per page and an
"as.table=TRUE" statement, directing the way the plots are laid out. 
I
have 18 plots altogether and so 6 of them end up on the second page.
Everything looks fine for the first page, but the x-axis labels (e.g.
1993, 1994...) are all missing on the second page.  The x-axis variable
name ("Year") is there at the bottom, however.   Any help is
appreciated. Thanks.

David G. Evans
Biometrician
Division of Sport Fish
Alaska Dept . of Fish and Game
Anchorage, Ak 99518

I should say I'm using Windows-7, R version 2.13.0 and lattice version
0.19-33.  I've pared down my code to this :

pdat = read.table("RGRAPHSDGE.csv",header=T,sep=",",fill=T)
print(xyplot(pdat$NITRATE~pdat$DATEYR|pdat$WELL,
as.table=TRUE,
layout=c(3,4),
xlab="Year",
ylab="Nitrate mg / litre",
strip=FALSE
)) 

First 3 lines of pdat looks like this:
                      WELL   DATEYR NITRATE
1 ALASKA CHILDRENS SERVICES 1993.836    0.81
2 ALASKA CHILDRENS SERVICES 1994.850    0.91
3 ALASKA CHILDRENS SERVICES 1995.803    0.94
....
Thanks again.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Evans, David G (DFG)
Sent: Wednesday, November 02, 2011 3:24 PM
To: r-help at r-project.org
Subject: [R] Lattice plots and missing x-axis labels on second page

Hello,
I'm trying to make a lattice plot (using xyplot()). I have included a
"layout=c(3,4)" statement, giving me 12 plots per page and an
"as.table=TRUE" statement, directing the way the plots are laid out. 
I
have 18 plots altogether and so 6 of them end up on the second page.
Everything looks fine for the first page, but the x-axis labels (e.g.
1993, 1994...) are all missing on the second page.  The x-axis variable
name ("Year") is there at the bottom, however.   Any help is
appreciated. Thanks.

David G. Evans
Biometrician
Division of Sport Fish
Alaska Dept . of Fish and Game
Anchorage, Ak 99518

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