[igraph] Re: new syntax for betweenness?

[Tamas Nepusz]

> However, my old program doesn't work for this new version igraph. More
> specifically:
> igraph_betweenness(&graph, &result, igraph_vss_all(),
> IGRAPH_UNDIRECTED); --> This worked on my computer before if 0.5.2 is
> used.
>
> Now, too few arguments to function ‘igraph_betweenness’
>
> Can you please help me about the new syntax?
Check out igraph/igraph_centrality.h:

int igraph_betweenness(const igraph_t *graph, igraph_vector_t *res,
                       const igraph_vs_t vids, igraph_bool_t directed,
                       const igraph_vector_t *weights, igraph_bool_t  
nobigint);

Basically, betweenness got two extra arguments: a weight vector and a  
boolean which should be false (zero) if you want to use big integers  
and true (1) if you want to use the original implementation (which is  
faster). So you have to add two extra arguments to the above call:

igraph_betweenness(&graph, &result, igraph_vss_all(),  
IGRAPH_UNDIRECTED, 0, 0);

This should work.

Best,
--
Tamas