Figure 1
From: Criticality of forcing directions on the fragmentation and resilience of grid networks
Network architecture and index conventions.
(a) represents a lattice network with uniform force directions and (b) random force directions. In (c) and (d) nodes are arranged spatially in a grid and [(M − 1) × N] + [M × (N − 1)] edges are randomly chosen from possible connections. (c) represents an ER network where forces are directed with the highest level of uniformity and (d) randomly. Edge colors correspond to the elongation thresholds 
while node colors are based on the degree of incoming connections kin. Node sizes correspond to the degree of outgoing connections kout (largest node has higher kout). Arrows are directed from source to target node. Figures in the last column highlight the edges of the shown selected nodes.
