Vince Carey (Harvard) was working on it; I don't know what the status
of his work is, it's been 5+ years...
I'm working on it for ESS, as well; but don't hold your breath unless
I get some funding support. I need to clean up the "forward" side
first, before getting the "back-into" side taken care of! (and more
importantly, release the corrections for Splus 5.1 that have been
sitting around for 2 weeks, waiting to be packaged up).
best,
-tony
--
A.J. Rossini Research Assistant Professor of Biostatistics
Biostatistics/Univ. of Washington (Th) Box 357232 206-543-1044 (3286=fax)
Center for AIDS Research/HMC/UW (M/F) Box 359931 206-731-3647 (3693=fax)
VTN/SCHARP/FHCRC (Tu/W) Box 358080 206-667-7025 (4812=fax)
rossini@(biostat.washington.edu|u.washington.edu|hivnet.fhcrc.org)
http://www.biostat.washington.edu/~rossini
>>>>> "FEH" == Frank E Harrell <fharrell@virginia.edu> writes:
FEH> Literate programming, in which programs are embedded in full
FEH> documentation (LaTeX, html, etc.) and extractors pull out
FEH> either the code (to run through a compiler) or text markup,
FEH> seems to have a lot of advantages. I am interested in a
FEH> different angle in which S-Plus programs do computations that
FEH> are inserted into documents. As I see it, literate
FEH> programming utilities do not allow for program output to be
FEH> incorporated semi- automatically into the document.
FEH> Here is a simple LaTeX example where S-Plus calculates a
FEH> chi-square statistic and a P-value for inserting into a
FEH> table. Here I assume that LaTeX variables are named the same
FEH> as S-Plus variables, and the names contain only letters, so
FEH> that code can be simplified using a little function. This
FEH> function can also convert NAs to blanks.
FEH> lvar <- function(x, digits=2)
FEH> paste('\\def\\',substitute(x),'{',
FEH> ifelse(is.na(x),'',round(x,digits)),'}', sep='')
FEH> cat(lvar(chisq), lvar(pval,4), sep='\n', file='parms.tex')
FEH> The contents of parms.tex will look like the following:
FEH> \def\chisq{3.84} \def\pval{0.05}
FEH> Inside the main LaTeX source use:
FEH> \input{parms} \begin{tabular}{l|cc} \hline\hline Test &
FEH> $\chi^2$ & $P$--value \\ \hline Age effect & \chisq & \pval
FEH> \\ \hline \end{tabular}
FEH> Has anyone seen are more systematic and general approach to
FEH> this sort of problem? I would especially like for
FEH> statistical reports to have calculated values inserted (as
FEH> above) but also able to link better with the code that
FEH> generated the calculations, so the report can be somewhat
FEH> self-documenting and easier to maintain over time.
FEH> -- Frank E Harrell Jr Professor of Biostatistics and
FEH> Statistics Division of Biostatistics and Epidemiology
FEH> Department of Health Evaluation Sciences University of
FEH> Virginia School of Medicine
FEH> http://hesweb1.med.virginia.edu/biostat
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