Martin,
However after some testing. I totally agree that CMYK handling in R using pdf(..., colormodel = "cmyk") is not correct.
I thought the issue may be OS specific, but I get similar behavior on a Mac. I have discovered the Cyan tool: http://cyan.fxarena.net/ and will try it out. As various people have pointed out, RGB -> CMYK conversion is never going to be perfect. It just so happens that my book contains many plots that use red and cyan, and a good conversion to cyan is most of what I am after. > One solution: > Output in tiff or png instead and then convert to CMYK using external tools. There are 600+ figures. There are png versions here: http://knosof.co.uk/ESEUR/figures/index.html ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.