Prof Brian Ripley wrote:
On Wed, 17 Mar 2004, Pisut Tempatarachoke wrote:
Hi all,
Could anyone help answer the following questions, please? (I'm using R-1.8.1-4 on Fedora Core 1 and very new to R)
(i) Is it possible to specify a font family (e.g. courier or helvetica) when graphing?
`when graphing' means what? Some graphics devices, e.g. postscript and pdf support families. X11() does not in 1.8.1 but will in 1.9.0, due early April.
(ii) How can I make ticks point inwards on all four sides of a plot? Is it possible to have minor and major ticks?
Their height (including direction) is controlled by par's tcl and tck -- this is in `An Introduction to R'. See ?par.
You cna get major and minor ticks by calling axis twice with different par values, if I understand you aright.
(iii) How would I specify a symbol "\sim" (i.e. "~") in a mathematical expression? So far, I've only seen "%~~%", but that's not exactly what I'm after. (I tried "%~%" but that didn't work.)
Try demo(plotmath) for what is supported. \sim is just a character in the symbol font, but I don't know how to access those directly.
Does this do what you want ...?
plot(1:10)
text(4, 2, expression(x*tilde(" ")*y))Depending on the complexity of your expression, Hershey fonts may be an alternative ...
plot(1:10)
text(4, 2, "x \\ap y", vfont=c("sans serif", "italic"))Paul -- Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 [EMAIL PROTECTED] http://www.stat.auckland.ac.nz/~paul/
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