You may want to consider a dotchart instead of a barplot. Then you can distinguish between groups by using symbols, grouping, and labels rather than depending on colors/shades of grey.
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Luis Torgo > Sent: Friday, January 23, 2009 5:22 PM > To: r-help@r-project.org > Subject: [R] Problem with colormodel in pdf driver > > I'm trying to create figures in PDF that use the 'gray' colormodel > instead of the default 'RGB' model, by requirements of a publisher. > > My problem has to do with the fact that I'm not being able to get gray > colors with this option on the pdf() driver. Here is a small example > for > problem replication: > > > R.version > _ > platform i486-pc-linux-gnu > arch i486 > os linux-gnu > system i486, linux-gnu > status > major 2 > minor 8.1 > year 2008 > month 12 > day 22 > svn rev 47281 > language R > version.string R version 2.8.1 (2008-12-22) > > > pdf('exp.pdf',colormodel='gray') > > barplot(table(subset(iris,Petal.Width>1)$Species)) > > dev.off() > > Contrary to what I was expecting the bars appear in black and not gray > as they are supposed to. This is not particularly serious for this toy > graph but for others it creates more problems. > > Interesting enough this problem does not occur with the same option on > the postscript() driver as it can be observed by running: > > postscript('exp.eps',colormodel='gray') > > barplot(table(subset(iris,Petal.Width>1)$Species)) > > dev.off() > > Any help is most appreciated. > > Luis Torgo > > -- > Luis Torgo > FEP/LIAAD - INESC Porto, LA Phone : (+351) 22 339 20 93 > University of Porto Fax : (+351) 22 339 20 99 > R. de Ceuta, 118, 6o email : lto...@liaad.up.pt > 4050-190 PORTO - PORTUGAL WWW : http://www.liaad.up.pt/~ltorgo > > ______________________________________________ > 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. ______________________________________________ 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.
