From murdoch at stats.uwo.ca  Tue Aug 18 12:46:15 2009
From: murdoch at stats.uwo.ca (Duncan Murdoch)
Date: Tue, 18 Aug 2009 06:46:15 -0400
Subject: [Rd] unnecessary braces?
In-Reply-To: <4A89D396.9060009@ufl.edu>
References: <4A89D396.9060009@ufl.edu>
Message-ID: <4A8A8677.6070602@stats.uwo.ca>

On 17/08/2009 6:03 PM, Ben Bolker wrote:
 >   the version 2 parser thinks I have unnecessary braces,
 > but I can't find any.  False positive or am I missing
 > something?  If a false positive, is there any way to
 > work around the warning?

The problem is that % in Rd is different than % in LaTeX:  it causes a 
break.  So the comment you have at the end of the first arg to \deqn 
causes the parser to think you have a one argument version of it, 
followed by an unnecessarily braced bit of text.

To fix it, change the two lines

{\mbox{Beta}(\theta(1-p),\theta p)}}%
{p(x) = %

to

{\mbox{Beta}(\theta(1-p),\theta p)}%
}{p(x) = %

Duncan Murdoch

 >
 > * checking Rd files against version 2 parser ... WARNING
 > Warning: ./man/dbetabinom.Rd:32-34: Unnecessary braces at ?{p(x) = %
 > (C(N,x)*Beta(N-x+theta*(1-p),x+theta*p))/%
 > Beta(theta*(1-p),theta*p)}?
 >
 > =============
 > \details{
 >    The beta-binomial distribution is the result of
 > compounding a beta distribution of probabilities with
 > a binomial sampling process.  The density function is
 > \deqn{p(x) = %
 > \frac{C(N,x) \mbox{Beta}(N-x+\theta(1-p),x+\theta p)}%
 > {\mbox{Beta}(\theta(1-p),\theta p)}}%
 > {p(x) = %
 > (C(N,x)*Beta(N-x+theta*(1-p),x+theta*p))/%
 > Beta(theta*(1-p),theta*p)}
 > The parameters \code{shape1} and \code{shape2} are
 > the more traditional parameterization in terms of
 > the parameters of the per-trial probability distribution.
 > }
 >
 >
 >
 > ------------------------------------------------------------------------
 >
 > ______________________________________________
 > R-devel at r-project.org mailing list
 > https://stat.ethz.ch/mailman/listinfo/r-devel



[Rd] unnecessary braces?
Duncan Murdoch