[R] Help with V function in igraph

[bmccowan]

I am using the code below to output some network measures:

central_social <- data.frame(V(s641_social)$name, indegree_social,
outdegree_social, incloseness_social, outcloseness_social,
betweenness_social, eigen_social)

and I get the following error:


Error in Re(z) : non-numeric argument to function

I know this has to do with V but I cannot figure out what is wrong.
s641-social is a graph object and the vertices do have a name attribute.

What can I do to fix?

Thanks

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