On 7/5/05, Gilles GUILLOT <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I'm working out some Fortran code for which
> I want to compute the Choleski decomposition of a covariance matrix
> in Fortran.
>
> I tried to do it by two methods :
>
> 1) Calling the lapack function DPOTRF.
> I can see the source code and check that my call is correct,
> but it does not compile with:
> system("R CMD SHLIB ~/main.f")
> dyn.load("~/main.so")
>
> I get:
> Error in dyn.load(x, as.logical(local), as.logical(now)) :
> unable to load shared library
> [...]
> undefined symbol: dpotrf_
>
> Could anyone point out how to compile with such a call to lapack?
Make a small package from your source code then follow the instructions in
http://tolstoy.newcastle.edu.au/R/devel/05/06/1382.html
>
> 2) Calling the Fortran function CHOL
> The previous combination of R CMD SHLIB and dyn.load
> compiles fine but I would like to see the source code of this function
> to check if my call is correct. I've not been able to find it in the R source
> distribution.
> Could anyone point the place of that file?
${RSRC}/src/appl/chol.f
>
> Thanks in advance,
>
> Gilles
>
>
> --
> _________________________________________________________________________
> Gilles GUILLOT
>
> INRA -Département Mathématiques et Informatique Appliquées
> Unité Mixte de Recherche INRA - INAPG - ENGREF
>
> Institut National Agronomique de Paris-Grignon
> 16, rue Claude Bernard
> 75231 Paris cedex 5 France
>
> phone 33 1 44 08 18 42
> fax 33 1 44 08 16 66
> http://www.inapg.fr/ens_rech/mathinfo/personnel/guillot/welcome.html
>
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
