CODEWITHSUNDEEP
igraphnameerrorundirected-graph
JRun
JRun

Reputation: 679

igraph's Weighted_Adjacency mode argument

First, thanks for taking the time to read and respond.

Second, the question:
I am trying to form a weighted undirected graph from my symmetric adjacency matrix, A, where the ij-th element is the edge weight between nodes i and j:

import igraph as ig
g = ig.Graph.Weighted_Adjacency(A, attr="weight", loops=False, mode=ADJ_MAX)

I get this a name error right off the bat:

NameError: name 'ADJ_MAX' is not defined

Now, I can convert my directed graph to an undirected one by:

g = ig.Graph.Weighted_Adjacency(A, attr="weight", loops=False)
g.to_undirected()

but I am wondering what the problem is.

Upvotes: 0

Views: 409

Answers (1)

Tamás
Tamás

Reputation: 48071

Use ig.ADJ_MAX instead of ADJ_MAX. ADJ_MAX is defined in the namespace of the igraph module.

Alternatively, you could type from igraph import ADJ_MAX, which pulls the ADJ_MAX constant into your local namespace, and then you can use it without the qualification.

Upvotes: 1

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