Dear Mr. Csardi and Mr. Horvat,


Thank you for sending me the important information.

I really appreciate your prompt reply.


Truly yours,


Makoto Okuda



From: igraph-help [] On 
Behalf Of Szabolcs Horvat
Sent: Saturday, February 3, 2018 1:33 AM
To: Help for igraph users <>
Subject: Re: [igraph] R igraph is comiled?


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 


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"
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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