Cannot create a directed graph using from_pandas_dataframe from networkx

Question

I'm learning networkx library and use twitter retweet directed graph data. I first read the datasets into pandas df (columns are 'from','to','weight') and wanted to put a first 300 rows(retweet) into a graph using below code:

tw_small = nx.from_pandas_dataframe(edges_df[:300],source='from',
                                   target='to',edge_attr=True)

I thought that it correctly created a graph but when I run tw_small.is_directed(), it says False(undirected graph) and I drew a graph using nx.draw() but it doesn't show the direction either.

Could someone help me find a correct way to make a directed graph?

Thanks.

Aric · Accepted Answer · 2017-06-18 17:06:23Z

46

Add the optional keyword argument create_using=nx.DiGraph(),

tw_small = nx.from_pandas_dataframe(edges_df[:300],source='from',
                                   target='to',edge_attr=True,
                                   create_using=nx.DiGraph())

answered Jun 18, 2017 at 17:06

Aric

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3 Comments

SummerEla Over a year ago

Thank you. The syntax for the create_using agrument was not clearly explained in the documentation.

Ofek Glick Over a year ago

I know it's been a while, but from_pandas_datafarme has been deprecated, how would you do it with more current tools?

user6386471 Over a year ago

@OfekGlick, not sure if you're still looking for this, but you would use from_pandas_edgelist, so it would be G = nx.from_pandas_edgelist(edges_df, source='from', target='to', edge_attr=True, create_using=nx.DiGraph()) (which is what the other solution below by Hamdi Tarek is saying).

Luis Cazares · Accepted Answer · 2019-04-30 19:41:25Z

12

Instead of a dataframe you can write edgelist, it works for me, it shows me an error when I used from_pandas_dataframe : "AttributeError: module 'networkx' has no attribute 'from_pandas_dataframe"

Solution :

Graph = nx.from_pandas_edgelist(df,source='source',target='destination', edge_attr=None, create_using=nx.DiGraph())

You can test if your graph is directed or not using: nx.is_directed(Graph). You will get True.

edited Apr 30, 2019 at 19:41

Luis Cazares

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answered Apr 30, 2019 at 18:54

Hamdi Tarek

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