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The heterogeneity of spatial data presenting a finite number of categories can be measured via computation of spatial entropy. Functions are available for the computation of the main entropy and spatial entropy measures in the literature. They include the traditional version of Shannon's entropy (Shannon, 1948 doi:10.1002/j.1538-7305.1948.tb01338.x), Batty's spatial entropy (Batty, 1974 doi:10.1111/j.1538-4632.1974.tb01014.x), O'Neill's entropy (O'Neill et al., 1998 doi:10.1007/BF00162741), Li and Reynolds' contagion index (Li and Reynolds, 1993 doi:10.1007/BF00125347), Karlstrom and Ceccato's entropy (Karlstrom and Ceccato, 2002
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