These clustering methods are implemented in C.  If you are in doubt about a
function, you can check the igraph/C documentation, and see if it is
present there.

igraph is a C library with interfaces in several higher level languages
(official ones in R and Python, and some other unofficial ones, such as the
one for Mathematica). Most of the functionality you can access through the
official interfaces is implemented in C.

On 2 February 2018 at 09:58, M. Okuda <> wrote:

> Dear Sirs/Madams,
> I use R igraph, especially the "cluster_spinglass" and "cluster_infomap"
> functions.
> Are these functions compiled or just R scripts?
> To compare the processing speed of these methods with the compiled other
> clustering methods,
> I would like to know what condition R igraph works on.
> Truly yours,
> M. Okuda
> _______________________________________________
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