IniziaInizia gratis

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.

Questo esercizio fa parte del corso

Network Analysis in R

Visualizza il corso

Istruzioni dell'esercizio

  • 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.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

# Load igraph
library(igraph)

# Subset vertices and edges
V(___)
E(___)

# Count number of edges
gsize(___)

# Count number of vertices
____(g)
Modifica ed esegui il codice