File IO

Functions for loading graphs from files and storing them in files.

load_edgelist(filepath, *, nodelist=None, file_source_col='Source', file_target_col='Target', file_channel_col='eType')

Load an edgelist file into a Graph object.

TODO: optional argument for putting the edgelist in a pandas dataframe.

Parameters:
  • filepath (str) – Path to the edgelist file. File should be csv formatted with columns corresponding to the source, target, and channel of each edge.
  • nodelist (DataFrame, optional) – Nodes of the graph and their attributes. Should have a column named by the value of node_col. Extracted from the source and target columns of the edgelist if not provided.
  • file_source_col (str, optional) – Name of the column in the csv corresponding to the source node.
  • file_target_col (str, optional) – Name of the column in the csv corresponding to the target node.
  • file_channel_col (str, optional) – Name of the column in the csv corresponding to the edge type.
Returns:

The graph represented by the edgelist.
Return type:

Graph
load_igraph(filename)

This function will read all graphs in an igraph file.

Parameters:filename (str) – The name of the file stored in igraph format
Returns:A list of Graphs stored in the file
Return type:list[Graph]