Hi Jian,

Take a look at
http://CRAN.R-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f

<http://CRAN.R-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f>
HTH,
Jorge


On Sun, Apr 4, 2010 at 2:52 AM, Jian Zhang <> wrote:

>
> Hey, folk.
>
> I am trying to get many figures by using the function "xyplot" in the
> library "lattice". I tried to using the loop to finish it quickly. But I
> cannot open the saved file after I run the program. But if I use the
> function "plot" to get other simply figures, it can work. So I want to ask
> how I can get the saved figures by using "xyplot".
>
> The following is a simple example about my program:
> library(lattice)
> require(stats)
> ## Tonga Trench Earthquakes
> Depth <- equal.count(quakes$depth, number=8, overlap=.1)
> for (i in 1:5) {
> filename=paste("fig",i,".pdf",sep="")
> pdf(filename,width=6.5,height=4.5)
> xyplot(lat ~ long | Depth, data = quakes)
> graphics.off()
> }
> # I cannot open the pdf files.
>
> Buf if I try:
> for (i in 1:5) {
> filename=paste("fig",i,".pdf",sep="")
> pdf(filename,width=6.5,height=4.5)
> plot(lat ~ long, data = quakes)
> graphics.off()
> }
>
> # I can open the pdf files.
>
> Hope you can help me.
> Thanks so much,
>
> ---
> Jian Zhang
> Department of Renewable Resources
> University of Alberta
> Edmonton, Alberta T6G 2H1, Canada
> Phone (office): 780-492-8670
> Email: jzhang1982@gmail.com; zjian@ualberta.ca
>
>
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