This recipe covers the features in the
igraph package to create graph objects, plot them, and extract network information from graph objects.
If you have not already installed the
igraph package, do it now using the following code:
Also, download the
users_edgelist_upper.Rdata file from the book's data files to your R working directory. Alternately, if you worked through the previous recipe Creating adjacency matrices and edge lists from this chapter, you will have created the file and ensured that it is in your R working directory.
To plot social network data using
igraph, follow these steps: