Figure 6
From: Multiscale heterogeneous optimal lockdown control for COVID-19 using geographic information
Visualization of the average number of interactions between subregions that results from the solution to the optimization problem for Phoenix MSA. Each node in the visualization graph represents a subregion; node sizes are proportional to the population of the corresponding subregion. Directed edges between subregions visualizes interactions between their populations. The direction of the edge represents the direction of travel: members of the origin subregion’s population visit activity sites within the target subregion, and then return to their home subregion. Increasing edge widths and darker colors for the edges represent a larger number of people that are traveling between subregions.
