R help - Feb 2004 - Does pdf() not work on Trellis graphics?

Hello, 

I have the following example. 

testpdf <- function(x,y){
  pdf()
  #plot(x,y)
  xyplot(x~y)
  dev.off()
}


source("testpdf.R")
x=1:1000
testpdf(x,x)

with "xyplot", the output is a file that can not be
read because it has no pages.  With "plot" it works
fine.  If I do it manually (from the GUI menu), it
works even for "xyplot".  How can I save it
automatically, without the GUI? 

I use R 1.8.0 on WinXP. 

Thank you, 
Adrian Dragulescu

See the FAQ, 7.24.

you need to

print(xyplot(x~y))

> Hello,
>
> I have the following example.
>
> testpdf <- function(x,y){
>   pdf()
>   #plot(x,y)
>   xyplot(x~y)
>   dev.off()
> }
>
>
> source("testpdf.R")
> x=1:1000
> testpdf(x,x)
>
> with "xyplot", the output is a file that can not be
> read because it has no pages.  With "plot" it works
> fine.  If I do it manually (from the GUI menu), it
> works even for "xyplot".  How can I save it
> automatically, without the GUI?
>
> I use R 1.8.0 on WinXP.
>
> Thank you,
> Adrian Dragulescu
>
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