On Wed, May 23, 2007 at 07:24:04AM -0700, Waichler, Scott R wrote: > > as you are using MacOS X, you'll have ghostscript installed anyway. so > > try in R `dev2bitmap' with `type =pdfwrite'. I believe `gs' _does_ > > include compression. a quick test showed at least a reduction by about > > a factor of 2 relative to `pdf()'. probably one can fiddle with the > > ghostscript settings (cf. e.g. `Ps2pdf.htm' in the ghostscipt > > docs: you > > can adjust the resolution for images in the pdf file) to > > improve this, so as a last resort you could indeed export the graphics > > as postscript and do the conversion to `pdf' by adjusting the `ps2pdf' > > switches. but even with the default settings the pdf produced via > > dev2bitmap/ghostscript is the better solution. apart from file size I > > by and then ran into problems when converting `pdf()' output to > > postscript later on, for instance. > > Can you give an example of dev2bitmap usage? I tried using it in place > of a pdf() statement. An X11 window opened and my figure flew by, but I > didn't get the file output. I also used dev2bitmap after opening a > pdf() and just before the dev.off() statement, since the help says it > works on the "current device", but again no written output. What am I > doing wrong? > > I tried: > dev2bitmap(file = plotfile2, type="pdfwrite", width=8.5, height=11, > pointsize=12) > print(myplot()) > dev.off() > > and > > pdf(file = plotfile, paper="letter", width=8.5, height=11, > pointsize=12) > print(myplot()) > dev2bitmap(file = plotfile2, type="pdfwrite", width=8.5, height=11, > pointsize=12) > dev.off() > > Thanks, > Scott Waichler > scott.waichler _at_ pnl.gov
`dev2bitmap(file = "rf.pdf", type = "pdfwrite")' copies the current device to the pdf-file `rf.pdf', i.e. you should have plotted something on the screen prior to using this (the manpage tells you so much...). no `dev.off' is necessary in this case. in order to "plot directly" into the pdffile, you can use `bitmap' instead of `dev2bitmap', i.e. use either: plot(1:10) dev2bitmap(file = "rf1.pdf", type = "pdfwrite") or: bitmap(file = "rf2.pdf", type = "pdfwrite") plot(1:10) dev.off() both should produce the desired output file (at least after including the correct `width' and `height' settings). joerg ______________________________________________ R-help@stat.math.ethz.ch 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.