[igraph] Problems about igraph calculating cluster coefficient

[镜]

Hi

The igraph vesion I was using is 6.5,and I have a problem about calculating clustering coefficient.When I use the function like this

igraph_vector_t clusterres;

igraph_vector_init(&clusterres, 0);

igraph_transitivity_local_undirected(&g,&clusterres,igraph_vss_all(), IGRAPH_TRANSITIVITY_ZERO);‍

the result in  clusterres ‍is zero or one,but the real result is not like this .

The parameters' meaning are as follows:

&g means the graph data ;

& clusterres ‍is used to store the result;

the graph is undirected and unweighted;

the example dataset is as follows:

0 1

0 2

1 2

1 3

3 2

I want to calculate all vertices in the graph.In this function I can't get the right result ,and I don't know why.Maybe I need your help.

Thank you very much!

Best Regrads!

Tian Li‍