[R] Supressing empty sections with Sweave

[Mikkel Grum]

Frank Harrel proposed the following solution:

\ifnum\Sexpr{x}=1
\section{}
. . .
\fi

and it works. Amazingly simple!

cheers,
Mikkel

--- Frank E Harrell Jr <f.harrell at vanderbilt.edu>
wrote:

> Mikkel Grum wrote:
> > Dear useRs,
> > 
> > I'm writing regular survey reports using Sweave.
> Each
> > report has several sections along the lines of:
> > 
> > \section*{Disease X}
> > 
> > <<MapX,fig=TRUE,echo=FALSE>>=
> > image(vectorx,vectory,matrixz)
> > 
> > @
> > 
> > Notes with or without Sexpr{a}.
> > 
> > \vfill
> > 
> > \pagebreak
> > 
> > \section*{Disease Y}
> > <<MapY,fig=TRUE,echo=FALSE>>=
> > ...etc.
> > 
> > 
> > Often one or more of the diseases is not observed
> (all
> > values in matrixz are 0), in which case I would
> prefer
> > not to display the section at all.  Does any one
> no
> > whether it is possible automate this with Sweave?
> > 
> > Mikkel