I’m using python-igraph to find the motifs in a graph with the method motifs_randesu.
And it returns a list of the number of each motif. However, I don’t know what kind of motif each number corresponds to.
For example:
g = IGraph.TupleList(edges, directed=True, vertex_name_attr='name', edge_attrs=None, weights=True)
print(g.motifs_randesu(size=4))
And I get a list:
[nan, nan, 2, nan, 4, 10, 9, 1, 0, 33, 26, 0, 4, 0, 17, 16]
What kind of motif does the number 16 represent？
Thank you.
If you have motif_count = g.motifs_randesu(size=4) then each element of motif_count gives the counts of the motif. That is, if motif_count[i] = n then isoclass i appears n times in the graph. You can construct the graph which motif i corresponds to with Graph.Isoclass(n=4, class=i). See also igraph.GraphBase
It works！Thank you for you help！
No problem, you are welcome! You can indicate that the post solves your question, so that others can find solutions more easily.
[quote=“vtraag, post:2, topic:96”]
https://igraph.org/python/doc/igraph.GraphBase-class.html
[/quote] is not a vaild webseit, could you tell me the new one?
The new link is igraph.GraphBase. I will also edit the post.
Thanks！Could you please clarify why “None” appeared in the list? Additionally, I would appreciate it if you could explain what “None” means in this context. Thank you for your assistance!
Only connected (to be precise: weakly connected) motifs are counted.
For example, numbers 1, 2 and 4 in the following list are excluded as they are not connected:
These are the ones that you get None for.