[R] Symbols for male/female
Martin Maechler
maechler at stat.math.ethz.ch
Thu Oct 31 10:57:48 CET 2002
>>>>> "Lorenz" == Lorenz Gygax <gygax at ifi.unizh.ch>
>>>>> on 31 Oct 2002 08:10:25 +0100 writes:
Lorenz> Dear all,
Lorenz> I would like to use the biological symbols for male
Lorenz> and female as plotting symbols in a scatterplot
Lorenz> (ideally filled and non-filled). R does not seem to
Lorenz> have these symbols using pch= in plot() nor are they
Lorenz> implemented via expression() or at least I did not
Lorenz> find them. I found that the symbols are
Lorenz> e.g. available in the wasysym and the marvosym
Lorenz> package in LaTeX.
Lorenz> I have coded two very rough functions that are able
Lorenz> to approximate those symbols, but not surprisingly,
Lorenz> they are not very efficient regarding the file size
Lorenz> they produce (I have included the code for the
Lorenz> female symbol at the end of the mail).
Lorenz> Is there a more or less straightforward way to
Lorenz> implement these symbols so that they can be accessed
Lorenz> either by pch= or expression()? Can you give me some
Lorenz> pointers on how I would need to go about this?
I've just replied to this in some length on R-devel rather than
R-help since my answer really is about future development of R,
here.
The short answer:
It is not straightforward but doable in principle by hacking in
the R source, learning some of the internal graphics system
(done in C). Please use R-devel at .. for further discussion.
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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