Figure 6: Network shapes derived from successful journey matrices output from the PATH model across the modelled climatic cycle based on ten repeated runs.
From: Modelling the role of groundwater hydro-refugia in East African hominin evolution and dispersal
(a) Future wet scenario (Run-1). (b) Present dry scenario (Run-3). (c) Dry (23 ka) scenario (Run-4). Note the progressive increase in the number of sub-networks. The axes are dimensionless and are expressed in non-geographic units. The networks simply portray the relationship between nodes linked by common edges (that is, one or more successful journey). Each sub-graph represents a distinct network that is unlinked to any other by an edge; the more the sub-graphs, the poorer the connectivity between the sum of the nodes present. The networks are derived from matrix of successful/unsuccessful journeys and were created by exporting the successful journey matrix from the PATH model and plotting nodes and edges within Matlab.
