The index can be interpreted as a measure of the variance of the spatial representation of the groups accros spatial unite, or as a normalized chi-squared measure of association between groups and units.
- an object of class matrix (or which can be coerced to that class), where each column represents the distribution of a group within spatial units. The number of columns should be greater than 1 (at least 2 groups are required). You should not include a column with total population, because this will be interpreted as a group.
multi-group entropy segregation index
Reardon S. F. and Firebaugh G. (2002) Measures of multi-group segregation. Sociological Methodology, 32, pp. 33-67.
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