ISDuncan: A function to compute Duncan & Duncan segregation index
Description
Duncan's segregation index is one-group form of
dissimilarity index DIDuncan and
measures the unevenness of a group distribution
compared to the rest of the population. It can be interpreted
as the share of the group that would have to move to achieve
an even distribution compared to the rest of the population.
Usage
ISDuncan (x)
Value
a numeric vector with values of the Duncan's segregation index
for each group
Arguments
x
- 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.
References
Duncan O. D. and Duncan B. (1955)
Residential Distribution and Occupational Stratification.
American Journal of Sociology 60 (5), pp. 493-503