R: Fortran-90 and R

On Thu, 2009-03-26 at 11:01 +0100, mauede at alice.it wrote:

I do hope the chapte about "Interfacing R and Fortran" is sufficient.
I have a heavy load of work from two projects and no previous experience
in either cases (analysis packages,
algorithms, and so on ...). I am a postdoc.

Ranjan Maitra

Posted this link

http://www.stat.umn.edu/~charlie/rc/

last week. I found this quite simple to follow, so it might be a useful
companion to the Writing R Extensions manual already suggested. The link
above doesn't specifically address fortran 90, but if special handling
of f90 code is required, the Writing R Extensions manual will tell you
what needs to be done differently.

HTH

G

Thank you.
Maura

-----Messaggio originale-----
Da: Peter Dalgaard [mailto:p.dalgaard at biostat.ku.dk]
Inviato: gio 26/03/2009 8.57
A: mauede at alice.it
Cc: r-help at r-project.org
Oggetto: Re: [R] Fortran-90 and R

mauede at alice.it wrote:

I have some code in Fortran-90 that outperforms my R implementation of

the same algorithm (in terms of speed).

I wonder whether it is possible to interface R with Fortran-90. that

is would like to call a Fortran routine from my R

script, passing to the Fortran routine some real numbers array, some

scalar real numbers, and an integer number .

I have no idea how to do that because Fortran is a compiled language

whereas R s an interpreted language ..

therefore I do not know whetehr it makes any sense to build a make

file for the linker ... Is the linker necessary ?

Thank you very much.
Maura

You need to read this:

http://cran.r-project.org/doc/manuals/R-exts.pdf

	-p

--
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
 Dr. Gavin Simpson             [t] +44 (0)20 7679 0522
 ECRC, UCL Geography,          [f] +44 (0)20 7679 0565
 Pearson Building,             [e] gavin.simpsonATNOSPAMucl.ac.uk
 Gower Street, London          [w] http://www.ucl.ac.uk/~ucfagls/
 UK. WC1E 6BT.                 [w] http://www.freshwaters.org.uk
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%