On Wed, 29 Jun 2011, Sam Albers wrote:
I know that this has been asked before in other variations but I just can't
seem to figure out my particular application from previous posts. My
apologies if I have missed the answer to this question somewhere in the
archives. I have indeed looked.
I am running Ubuntu 11.04, with R 2.12.1 and ESS+Emacs.
For journal formatting requirements, I need to italicize all the greek
letters in any plot. This is reasonably straight forward to do and I
accomplished this task like so:
library(ggplot2)
label_parseall <- function(variable, value) {
plyr::llply(value, function(x) parse(text = paste(x)))
}
dat <- data.frame(x = runif(270, 0, 125), z = rep(LETTERS[1:3], each = 3),
yy = 1:9, stringsAsFactors = TRUE)
#unicode italicized delta
dat$gltr =
factor(c("italic(\u03b4)^14*N","italic(\u03b4)^15*N","italic(\u03b4)^13*C"))
#So this is what I want my plot to look like:
plt <- ggplot(data = dat, aes(x = yy, y = x)) +
geom_point(aes(x= yy, y=x, shape=z, group=z), alpha=0.4,position =
position_dodge(width = 0.8)) +
facet_grid(gltr~.,labeller= label_parseall, scales="free_y")
plt
#So then I exported my plot as a PDF like so:
pdf("Times_regular.pdf", family='Times')
plt
dev.off()
#The problem with this was that the delta symbols turned into dots.
You forgot to set the encoding: see the ?pdf help file. Greek is most
likely not covered by the default encoding (and you also forgot the
'at a minimum' information required by the posting guide, so we don't
know what your defaults would be).
#I solved this problem using Cairo
library(Cairo)
cairo_pdf("Cairo.pdf")
plt
dev.off()
The problem that I face now is that I am unsure how to output a figure that
maintains the greek symbols but outputs everything in the plot as TImes New
Roman, another requirement of the journal. So I can produce a Times New
Roman PDF plot and an italicize greek symbol unicode PDF plot but not both.
Does anoyone have any idea how I might accomplish both of these things
together in a single PDF?
I woud use cairo_pdf() in base R (and not package Cairo). Use grid
facilities to change font, or use the version in R-devel which has a
family= argument.
Thanks so much in advance,
Sam
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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)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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