The ecological detector is used to contrast whether there is distinct difference in the influence of two explanatory variables on the spatial distribution of dependent variable, and is measured by the F statistic:(3)F=Nx1Nx2-1SSWx1Nx2Nx1-1SSWx2(4)SSWx1=∑h=1L1Nhσh2(5)SSWx2=∑h=1L2Nh...