igraph - igraph's Weighted_Adjacency mode argument

Question

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.

Answer 1

使用ig.ADJ_MAX而不是ADJ_MAX. 在模块ADJ_MAX的命名空间中定义。igraph

或者，您可以键入from igraph import ADJ_MAX，将ADJ_MAX常量拉入您的本地命名空间，然后您可以在没有限定条件的情况下使用它。