graph.strength: Strength or weighted vertex degree
In igraph: Network Analysis and Visualization

graph.strength

R Documentation

Strength or weighted vertex degree

graph.strength() was renamed to strength() to create a more consistent API.

graph.strength(
  graph,
  vids = V(graph),
  mode = c("all", "out", "in", "total"),
  loops = TRUE,
  weights = NULL
)

`graph`	The input graph.
`vids`	The vertices for which the strength will be calculated.
`mode`	Character string, “out” for out-degree, “in” for in-degree or “all” for the sum of the two. For undirected graphs this argument is ignored.
`loops`	Logical; whether the loop edges are also counted.
`weights`	Weight vector. If the graph has a `weight` edge attribute, then this is used by default. If the graph does not have a `weight` edge attribute and this argument is `NULL`, then a `degree()` is called. If this is `NA`, then no edge weights are used (even if the graph has a `weight` edge attribute).