Transforming GDF to JSON

Gephi is an excellent tool to get easy and fast results. However, if we want to present the graph interactively on a website, we need to implement a different kind of visualization. In order to work with the graph in the web, we need to transform our GDF file to JSON format.

1. Firstly, we need to import the libraries numpy and json. For more information about JSON format, refer to Chapter 2, Working with Data.

   import numpy as np
   import json

2. The numpy function, genfromtxt, will obtain only the ID and name from the nodes.csv file using the usecols attribute in the 'object' format.

   nodes = np.genfromtxt("nodes.csv", 
                          dtype='object',
                          delimiter=',',
                          skip_header=1,
                          usecols=(0,1))

3. Then, the numpy function, genfromtxt, will obtain links with the source node and target node from the links.csv file using the usecols attribute in the 'object' format.

   links = np.genfromtxt("links.csv",
        ...