The objective of this article is to develop a method to analyze characteristics of agglomeration of land use based on grid data. To this end, a method which uses the average ratios of edges of each end with the same and different kinds of land use (called as Edge Ratios : ERs) is formulated based on JOIN-COUNT statistics and Same Edge Ratio (SER). Among ERs, the average ratios of edges with the different kinds of land use are especially called as Different Edge Ratios : DERs. The expected value and the variance of DER are calculated and a statistieal test is formulated.
