Check the FAQs. You need an explicit 'print' on the lattice call:
> for (i in 1:5) {
> f<-paste('Test',i,'.png',sep='')
> png(f)
> print(xyplot(y~x|z))
> dev.off()
> }
On Tue, Aug 18, 2009 at 8:13 AM, Alex van der Spek<am...@xs4all.nl> wrote:
> I cannot understand why xyplot does not work within a simple for loop.
>
> This works up to the for loop; inside the for loop the png files are
> opened and closed, but nothing is plotted. No error messages are written
> to the console either. This is the case on both Windows and Linux.
>
> By the way, running the script below on Linux using source() does not
> even produce the first xyplot. This is less of an issue for me though.
>
> #! usr/bin/env R
> # Test lattice loop
>
> rm(list=ls())
>
> x<-1:16
> y<-2*x-1
> z<-rep(c('A','B','C','D'),4)
>
> xyz<-data.frame(x=x,y=y,z=z)
>
> require(lattice)
>
> png('Test.png')
> xyplot(y~x|z)
> dev.off()
>
> for (i in 1:5) {
> f<-paste('Test',i,'.png',sep='')
> png(f)
> xyplot(y~x|z)
> dev.off()
> }
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
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and provide commented, minimal, self-contained, reproducible code.
