Produce spatial plots of epidemic progression over time
epispatial (type, x, y, inftime, removaltime = NULL, time = NULL, tmin = NULL)
Type of compartment framework, with the choice of "SI" for Susceptible-Infectious diseases and "SIR" for Susceptible-Infectious-Removed
X coordinates of individuals
Y coordinates of individuals
Times at which individuals become infected/infectious
Times at which individuals are removed
Specify time points at which the spatial square is plotted
Initial time point at which infection occurs, default value is one