On Mon, 23 Jan 2006, Kilian Plank wrote:

> it is possible to invoke certain graphical functions (e.g. curve)

> with an expression argument, e.g. "ylab=expression(phi)".

Well, that's a internal (to curve, via plot.default) call to title(), and

the use of expressions in graphical labels is called 'plotmath'.

> There are some greek letters with a second script. For instance, in

> latex two symbols do exist: phi and varphi. Is the second symbol also

> available in an expression()? If yes, how?

?plotmath tells you 'phi1' (in current R 2.2.1). The next version of R

(2.3.0) will also allow varphi as a synonym.

Be careful though: TeX (not 'latex') names for these are not standard, and

over e.g. 'varpi' decidely confusing. R primarily uses the Unicode/Adobe

names.

--

Brian D. Ripley,

[hidden email]
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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