When I use the postscript with the ComputerModernItalic family, minus signs are not properly displayed, but are changed into capital gammas. The attached test-postscript.pdf file illustrates the problem, which I created starting with the following R code:
> postscript("test-postscript.eps", family = "ComputerModernItalic")
> plot(seq(-5,5,1),seq(-5,5,1))
> dev.off()
I then created the attached .pdf file from the .eps file using the Preview
application on a MacBook Pro (see below for details about my R session). I
have also attempted to create the same plot using the pdf function. For some
reason, pdf does not like `family = "ComputerModernItalic"', so I needed to do
the following.
> CMitalic <- Type1Font("ComputerModern2",
+ c("CM_regular_10.afm", "CM_boldx_10.afm",
+ "cmti10.afm", "cmbxti10.afm",
+ "CM_symbol_10.afm"),
+ encoding = "TeXtext.enc")
> pdf("test-pdf.pdf", family = CMitalic)
> plot(seq(-5,5,1),seq(-5,5,1))
> dev.off()
The attached test-pdf.pdf file shows the minus signs are no longer replaced by
capital gammas, but are now blanked out.
For the record, I noticed this problem several years ago and have been
hoping that it would disappear with each new release of R. At the time that I
first noted it, I asked a colleague to run an example on a Windows box, and the
same problem occurred, leading me to conclude that the problem is not unique to
Mac OS-X. Any help or workarounds for the problem would be greatly
appreciated! Regards,
- Don Percival
> sessionInfo()
R version 2.15.3 (2013-03-01)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_2.15.3 tools_2.15.3
test-postscript.pdf
Description: Adobe PDF document
test-pdf.pdf
Description: Adobe PDF document
===========================================
d...@apl.washington.edu
Applied Physics Laboratory
Box 355640
University of Washington
Seattle, WA 98195-5640
Phones: 206-543-1368 Fax: 206-543-6785
206-543-1300
http://faculty.washington.edu/dbp
===========================================
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