'gray' is what is in the code: 'grey' uses rgb -- just look at the pdf
produced.
The issue is that the wrong ('stroke' not 'fill') colour is set in ht
'gray' colormodel.
On Fri, 23 Jan 2009, David Winsemius wrote:
Try changing the color to "grey".
Despite the help pages saying this:
colormodel
a character string describing the color model: currently allowed values are
"rgb", "gray" and "cmyk". Defaults to "rgb".
I got the expected behavior by making the "gray" -> "grey" change on my Mac
OS 10.5.6/R2.8.1 system.
--
David Winsemius
On Jan 23, 2009, at 7:21 PM, Luis Torgo wrote:
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
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
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