Figure 5
From: Stepwise slime mould growth as a template for urban design
Performance of the modelled networks is within 4% of the performance of the biological networks. (a) Grown Physarum mesh with overlaid network (t = 5 days). (b) Modelled Physarum mesh with overlaid network. (c) Plot relating network cost to travel time for both grown (green) and modelled (black) networks. Trendline is a third-order polynomial function. (d) Plot relating network cost to vulnerability for both grown (green) and modelled (black) networks. Trendline is a third-order polynomial function. (e) Plot relating network travel time to vulnerability for both grown (green) and modelled (black) networks. Trendline is a linear function. All performance values normalized to the largest value. Modelled performance values displayed on the plots represent performance for the closest modelled point to the grown point (green) along the trendline. (f–h) Performance differences across multiple attractor patterns and growth repeats between biological and modelled networks are consistently within 4% of one another. Green dots represent grown networks. Smooth black lines represent average performance differences between all grown and modelled networks at each oat layout, where difference is taken between the grown network point to the closest point along the modelled network curve. Ptt/c is the network travel time over the network cost; Pv/c is the network vulnerability over the network cost; Pv/tt is the network vulnerability over the network travel time. Plots displayed in c-e represent data from oat layout 7.
