[R] question: DLL or EXE from R procedures

[Prof Brian Ripley]

On Wed, 24 Dec 2003, Spencer Graves wrote:

>       While Uwe is correct about the absence of a compiler for R, one 
> can call R from other languages such as C.  A description of this can be 
> found, e.g., from R 1.8.1, help.start() -> "Writing R Extensions" -> 
> "Evaluating R expressions from C".  

But first you have to get an `R expression', and you also need to have R 
initialized and running, so this is only really of use from an package 
called from R in the first place.

I haven't seen the reply I sent several hours ago, but that mentioned 
several routes, such as embedding R via (D)COM and calling R with a system 
call.

> Also, the many R functions actually 
> call C code, which could be called directly. 

In principle yes, but I would not try doing regression that way -- just 
think about the code needed to encode a formula (and BTW that calls back 
into an R interpreter).

>       hope this helps. 
>       spencer graves    
> 
> Uwe Ligges wrote:
> 
> >PaTa PaTaS wrote:
> >  
> >
> >>Hi,
> >>I wonder if it is possible to create an DLL or EXE file performing R procedures. Instead of running R, reading data and calling some procedures, I would like to use R functions in the following way: "C:\linearRegression.exe data.txt" which would produce let's say file "output.txt" with the results. Is there some way how to do it?
> >>Thanks a lot. Pavel Vanecek
> >>    
> >>
> >
> >No. There is not compiler for R code available.
> >
> >Uwe Ligges
> >
> >______________________________________________
> >R-help at stat.math.ethz.ch mailing list
> >https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >  
> >
> 
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> 

-- 
Brian D. Ripley,                  ripley at 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 272866 (PA)
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