Martin Maechler <maechler at stat.math.ethz.ch> writes:
> In nonparametric regression and density estimation, something like
> \hat{f'}(x) [LaTeX] is very natural.
> In all S dialects,
> hat(f')
> is invalid syntax, and hence one cannot use something like
> plot(1, main = expression(hat(f')))
>
> I can say something like
>
> plot(1, main = expression(widehat(paste(f, "'"))),
cex.main = 3)
>
> but that (the R code, not the plot result) is a bit ugly.
> Nicer solutions are welcome...
well...
quote(widehat("f'"))
quote(widehat(f * "'"))
quote(widehat(f * minutes))
(I think that it is \widehat{f'} in LaTeX too, unless you mean
\hat{f}')
quote(widehat(prime(f))) would be logical if you could push Paul to
implement prime(), but I'm not sure it is actually prettier.
--
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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