`mod.matrix()`

was renamed to `modularity_matrix()`

to create a more
consistent API.

## Arguments

- membership
Numeric vector, one value for each vertex, the membership vector of the community structure.

- weights
If not

`NULL`

then a numeric vector giving edge weights.- resolution
The resolution parameter. Must be greater than or equal to 0. Set it to 1 to use the classical definition of modularity.

- directed
Whether to use the directed or undirected version of modularity. Ignored for undirected graphs.