[R] Call R from Fortran

Prof Brian Ripley ripley at stats.ox.ac.uk
Thu May 19 09:32:19 CEST 2005

On Thu, 19 May 2005, Mulholland, Tom wrote:

> I don't know, but I do know that if you search the mailing list the answer is there.
> One place to start might be 
> http://finzi.psych.upenn.edu/R/Rhelp02a/archive/50776.html

That is about calling Fortran from R, not the subject of this question.
(There are many other more authoritative sources for that.)

> I found this by searching for "fortran" on the mailing list.
> You might also read the posting guide. The link above refers to a 
> particular operating system which may or may not be be the one you are 
> using. I think you might also need to read "Writing R Extensions"

This can only be done by combining Fortran and C, as R functions need R 
objects as arguments and return R objects.  R objects are defined in C 
headers and use structures not in Fortran 77.  But it can be done, and 
"Writing R Extensions" is a good place to start, especially the 
OS-specific sections on writing new front ends.

>> From: r-help-bounces at stat.math.ethz.ch
>> [mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Samiran Sinha
>> Sent: Thursday, 19 May 2005 7:24 AM
>> To: r-help at stat.math.ethz.ch
>> I need to call a R function from Fortran 77 program. How will I do that 
>> exactly? I will grately appreciate any help. Sincerely,

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)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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