R help - Jun 2004 - Fortran in R??

Hello,
  We have been trying to use a well working Fortran program 
in R but have been unable to upload it as part of our 
undergraduate research.  We are working with windows 98.  
We've read all of what we can find, but cannot figure it 
out.  We've tried the dyn.load commands and whatnot.  Do we 
need a package in order to do this?  Do we need to do it on a 
computer that has the Fortran program on it...and should we 
compile it before we even attempt to upload it?  Do you have 
any suggestions?  Thanks for your time. 
Kris Dardia

On Fri, 25 Jun 2004 13:10:51 -0400, <dardiakm at jmu.edu> wrote :
>Hello,
>  We have been trying to use a well working Fortran program 
>in R but have been unable to upload it as part of our 
>undergraduate research.  We are working with windows 98.  
>We've read all of what we can find, but cannot figure it 
>out.  We've tried the dyn.load commands and whatnot.  Do we 
>need a package in order to do this?  Do we need to do it on a 
>computer that has the Fortran program on it...and should we 
>compile it before we even attempt to upload it?  Do you have 
>any suggestions?  Thanks for your time. 
You definitely need to compile it before using dyn.load.  Instructions
for how to do this sort of thing are in Writing R Extensions manual,
which is distributed with R.

It is usually easiest to compile using the R script, e.g.

R CMD SHLIB myprog.f

Duncan Murdoch