All, I used the very useful colorspace package for the plots in my book (pdf available here): http://knosof.co.uk/ESEUR/
The color makes the plots look great, on screen. To get lots printed, the printer requires converting the images to use cmyk (a common requirement for larger printers, I'm told). See page 11 here: https://www.ingramspark.com/hubfs/downloads/file-creation-guide.pdf No problem, the script below uses ghostscript to achieve this: gs -o ESEUR-cmyk.pdf \ -sDEVICE=pdfwrite \ -sProcessColorModel=DeviceCMYK \ -sColorConversionStrategy=CMYK \ -sColorConversionStrategyForImages=CMYK \ ESEUR.pdf the problem is that the converted colors don't look nearly as good. For instance the cyan now looks blue, and prints as pure blue. I can regenerate the images, and explicitly specify cmyk. But using: pdf.options(colormodel="cymk") does not change anything. The colors look remarkably similar to those produced via the ghostview route. I have been looking at color profiles and trying to find a way of modifying an ICC profile (yes, it looks difficult). Does anybody have any ideas for producing cmyk images that have the same (or close enough) look as the RGB? ______________________________________________ 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.
