Scott
Scott Waichler, Senior Research Scientist Pacific Northwest National Laboratory MSIN K9-36 P.O. Box 999 Richland, WA 99352 USA 509-372-4423 (voice) 509-372-6089 (fax) [EMAIL PROTECTED] http://hydrology.pnl.gov ------------------------------------------------------------------------ --------------- > -----Original Message----- > From: Joerg van den Hoff [mailto:[EMAIL PROTECTED] > Sent: Wednesday, May 23, 2007 9:25 AM > To: Waichler, Scott R > Cc: r-help@stat.math.ethz.ch; [EMAIL PROTECTED] > Subject: Re: [R] Reducing the size of pdf graphics files > produced with R > > 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 > `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). I tried the second method, using width=8.5, height=11, but the margins in the output were bad, as if it assumed a4 paper or something. I tried inserting paper="special" and paper="letter" in the bitmap call, but both caused errors. Also, the plot was in grayscale instead of color. Scott Waichler ______________________________________________ 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.