Session Ready
Exercise

Counting vertices and edges

A lot of basic information about a network can be extracted from an igraph object. In this exercise you will learn how to count the vertices and edges from a network by applying several functions to the graph object g.

Each row of the friends dataframe represents an edge in the network.

Instructions
100 XP
  • Use V() and E() to view the vertices and edges respectively of the network.
  • Use gsize() to count the number of edges in a network.
  • Use gorder() to count the number of vertices in a network.