Introduction to the Modeling and Analysis of Complex Systems

318 CHAPTER 15. BASICS OF NETWORKSJillJessJeffJoshJaneJohnJackFigure 15.8: Visual output of Code 15.14 with a corrected CSV data file.If you want to import the data as a directed graph, you can use the create_usingoption in the read_adjlist command, as follows:Code 15.16: read-adjlist-directed.pyfrom pylab import *import networkx as nxg = nx.read_adjlist(’myNetworkData.csv’, delimiter = ’,’,create_using = nx.DiGraph())nx.draw(g, with_labels = True)show()The result is shown in Fig. 15.9, in which arrowheads are indicated by thick line segments.Another simple function for data importing is read_edgelist. This function reads anedge list, i.e., a list of pairs of nodes, formatted as follows:Code 15.17:John JaneJohn JackJess JoshJess JillJack Jane