Hi Nicolas, You nee to explicitly wrap it in print() when it is inside a loop (if I'm not mistaken also when inside a function). With lattice loaded, you can find the specific print methods by methods(print) . From your example:
pdf("temp1.pdf", width=8, height=8) for(k in 1) { print(wireframe(volcano)) } dev.off() HTH, Josh On Tue, Jul 20, 2010 at 4:02 PM, Nicolas STRANSKY <stran...@broadinstitute.org> wrote: > Hi, > > I'm hitting a strange problem where pdf plots that I'm trying to make > are blank, only when produced from within a loop. The pdf contains 0 page. > I've narrowed the problem to this minimal script that invariably > produces an empty pdf with my setup: > pdf("/local/scratch/1.pdf", width=8, height=8) > for (k in 1) { > wireframe(volcano) > } > dev.off() > > The odd thing is that > pdf("/local/scratch/1.pdf", width=8, height=8) > wireframe(volcano) > dev.off() > works fine! > > Am I doing something wrong here? I've tried on two different systems, > Linux or Mac. > > Thanks, > Nico > > > R version 2.11.0 (2010-04-22) > x86_64-unknown-linux-gnu > > locale: > [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C > LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 LC_MONETARY=C > > [6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C > LC_ADDRESS=C LC_TELEPHONE=C > [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] lattice_0.18-5 custom_1.1 > > loaded via a namespace (and not attached): > [1] grid_2.11.0 > > -- > Nicolas STRANSKY, Ph.D. > Computational Biologist, Cancer Program > Broad Institute of MIT and Harvard > 5CC-1339 | 7 Cambridge Center | Cambridge, MA 02142, USA > Phone: +1 617 714 7564 | n...@broadinstitute.org > > ______________________________________________ > 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ 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.