[R] Query about C Function Interface

[Prof Brian Ripley]

You are trying to load woa.obj, and you are on Windows which should be
looking for a .dll and the error message says woa.so.  You say you keep
your .exe in the rw1070 directory.

You are rather confused!  dyn.load on Windows loads a DLL file from the
current working directory, *as its help says*.  You need to build a
suitable DLL.

On Thu, 5 Jun 2003, 70808subhash kalla wrote:

> Sir/Madam,
> 
> I am a graduate student in Petroleum Engineering. I have a problem in using 
> R and hope that you could help in solving that. I have a code in C, which 
> displays orthogonal arrays when I give number of rows and number of columns 
> to it. I have another code in R that calls this C code. I am very new to R. 
> I downloaded the R and loaded packages base and mva. I also kept my C code 
> .exe file in the R\rw1070 directory and used the function that is written in 
> R. There is some problem in this line it seems:
> 
> if(!is.loaded(C.symbol("woa")))  dyn.load(woa.obj)   # woa is my file name 
> in C
> 
> Error message coming like this:
> 
> Error in dyn.load(x, as.logical(local), as.logical(now)) :
>         unable to load shared library "C:/Program Files/R/rw1070/woa.so":
>   LoadLibrary failure:  The specified module could not be found
> 
> I tried to get help from help files but I couldn’t get the problem solved. 
> Its very important for me to fix this problem as fast as possible and hope 
> you could help me in this regard.

Perhaps you should be paying a consultant to help you, then?

-- 
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