Fig. 2
From: Using floating catchment area (FCA) metrics to predict health care utilization patterns
Weight values and formulas for the distance decay functions. The four function forms are a) Downward Log Logistic (DLL), b) Gaussian (GAUS), c) Exponential (EXP), and d) Logistic Cumulative Distance Function (LCDF). The four parameter settings for each function are MIN (black), MOD (green), HOSP (red), HIGH (blue). The observed distance decay from the hospital utilization data are plotted as grey circles for reference