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.