Dear list,
I got an automatic email complaining than some of my packages didn't
pass 'R CMD check' for R-2.10.0 alpha anymore. Both of them make use of
the "cases" LaTeX environment.
Inspecting the log outputs I got:
LaTeX errors when creating PDF version.
This typically indicates Rd problems.
LaTeX errors found:
! Misplaced alignment tab character &.
I noticed that the Rd parser changed quite recently and that '#', '_'
and '&' must not be escaped according to "Writing R extensions".
However, the problematic .Rd portion seems (to me) OK
\deqn{\theta(h) =
\begin{cases}
u_\beta \left(\mu + \frac{\nu(h)}{\Gamma(1 - \xi)}
\right),&\xi \neq 0\\
\exp\left(\frac{\nu(h)}{\sigma}\right),&\xi = 0
\end{cases}
}{u_beta (mu + nu(h) / Gamma(1 - \xi)), if \xi < 1,
exp(nu(h)/sigma), otherwise}
Removing the alignment tab character '&' solves the issue but doesn't
produce the expected LaTeX output. Do I miss something with the new Rd
parser requirements?
I'm not 100% sure but it also seems like that "\\' symbol isn't
interpreted as a break line - in the "cases" environment at least. This
might be one reason why the alignment tab '&' is misplaced.
Best,
Mathieu
--
Institute of Mathematics
Ecole Polytechnique Fédérale de Lausanne
STAT-IMA-FSB-EPFL, Station 8
CH-1015 Lausanne Switzerland
http://stat.epfl.ch/
Tel: + 41 (0)21 693 7907
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