trophic_differences#
- trophic_differences(G, weight='weight')[source]#
Compute the trophic differences of the edges of a directed graph.
The trophic difference \(x_ij\) for each edge is defined in Johnson et al. [1] as:
\[x_ij = s_j - s_i\]Where \(s_i\) is the trophic level of node \(i\).
- Parameters:
- GDiGraph
A directed networkx graph
- Returns:
- diffsdict
Dictionary of edges with trophic differences as the value.
References
[1]Samuel Johnson, Virginia Dominguez-Garcia, Luca Donetti, Miguel A. Munoz (2014) PNAS “Trophic coherence determines food-web stability”