OasisR (version 2.0.1)

Gini2: A function to compute Spatial Gini's between group index index

Description

The between group version of Gini index is obtained by computing the index for a subpopulation formed by two groups

Usage

Gini2(x)

Arguments

x

- an object of class matrix (or which can be coerced to that class), where each column represents the distribution of a population group, within spatial units. The number of columns should be greater than 1 (at least 2 population groups are required). You should not include a column with total population in each unit, because this will be interpreted as a group.

Value

a matrix with between group Gini index

References

Duncan O. D. and Duncan B. (1955) A Methodological Analysis of Segregation Indexes. American Sociological Review 41, pp. 210-217

See Also

Other one-group evenness indices: ISDuncan, Gini, Gorard, Atkinson, HTheil, 'ISWong, ISMorrill

Between groups dissimilarity indices: DIDuncan, DIMorrill, DIWong

Examples

# NOT RUN {
x <- segdata@data[ ,1:2]
Gini(x)
# }