migration.gini.col: Columns Gini Index

Description Usage Arguments Value References See Also Examples

View source: R/gini.R

Description

The Columns Gini index concentrates on the "relative extent to which the destination selections of in-migrations are spatially focused":

G^T_R = \frac{∑_j ∑_{i \neq j} ∑_{g \neq i,j} | M_{ij} - M_{gj} | }{ (2n(n-1)-1) ∑_i ∑_{j \neq i} M_{ij}}

This implementation solves the above formula by computing the dist matrix for each columns.

Usage

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Arguments

m

migration matrix

Value

A number between 0 and 1 where 0 means no spatial focusing and 1 shows maximum focusing.

References

See Also

migration.gini.row migration.gini.col.standardized

Examples

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migration.indices documentation built on May 29, 2017, 8:43 p.m.