> From: Oliver Klinger <klinger@lkn.e-technik.tu-muenchen.de>
>
> Through an inquiry at MathSoft I just learned that the C- an
> FORTRAN-source-codes are not available because they may not leave MathSoft.
> Therefore there are no ways to list internal source code.
That is true for S-PLUS code, but I believe you can buy a source
code licence for S, if you try hard enough. However, stl is in
SHOME/splus/.Functions, so is presumably an S-PLUS addition to or
modification of S. Sometimes inspired guesswork will reveal the
source of the code: for example the code inside kmeans is the
Applied Statistics algorithm 136, and that inside ppreg is Friedman's
SMART code.
> But: There is a program call "R" which is a freely distributable
> S+-reprogramming!!! I'm not sure but I think there's free source code
> available for R. MathSoft told me that the programming interface is the same
> for R and S+, so there might be similar functions you could view AND edit.
> I'm going to try it myself and if I get important results I'll post again.
> So - stay tuned
>
That's sort of true. However, R and S are not the same and internally
are quite different, so examining the source code for R (which is all
public) will not necessarily tell you how S works. More seriously, R
implements a fairly small subset of S-PLUS, with minimal time-series
functionality and definitely not including stl. R has its own mailing
lists, and discussion on R is better placed there than here.
-- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595----------------------------------------------------------------------- This message was distributed by s-news@wubios.wustl.edu. To unsubscribe send e-mail to s-news-request@wubios.wustl.edu with the BODY of the message: unsubscribe s-news