Re: [igraph] Adding a C function to the igraph R package

[Tamas Nepusz]

Hi Mile,

I guess you will also have to adjust the R interface appropriately and  
recompile the R interface of igraph. I'm no expert in R-related issues  
(it is Gabor who developed the R interface), but you can try and take  
a look at the source code in interfaces/R/src/ to get a rough idea of  
what you should be doing.

Note that some parts of the R interface are automatically generated,  
there's an input file in interfaces/R/src/rinterface.c.in, this is  
read by a Python script (tools/stimulus.py) that generates a file  
called rinterface.c, and this will be compiled in the end to obtain  
the R interface. The Python script takes the function definitions in  
interfaces/functions.def to generate the glue code between R and the  
igraph C core automatically. So, if your own function follows the  
igraph calling conventions, it might happen that you simple have to  
extend functions.def with the definition of your function and let  
stimulus.py generate the glue code automatically. However, as I said,  
I'm no expert in the inner details of the R interface, so I might be  
wrong. Anyway, if you can send the source code of the C function you  
added to igraph to my private email address, I can take a look at it  
and give you more detailed instructions.

Regards,
--
Tamas

On 2009.09.14., at 16:14, Mile Sikic wrote:

> Hello
>
> I have made my own c function using igraph c libraries. How I can  
> add this function to the igraph R package. I am using 0.5.2. version  
> on ubuntu linux.
>
> Regards
>
> Mile SIkic
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