migration.effectiveness: Migration Effectiveness Index

In daroczig/migration.indices: Migration indices

Description

The Migration Effectiveness Index "measures the degree of (a)symmetry or (dis)equilibrium in the network of interregional migration flows":

MEI = 100\frac{ ∑_i |D_i - O_i| }{ ∑_i |D_i + O_i| }

where D_i is the total inflows to zone i and O_i is the total outflows from zone i.

Usage

migration.effectiveness(m)

Arguments

m	migration matrix

Value

A number between 0 and 100 where the higher number shows an efficient mechanism of population redistribution.

References

• Martin Bell and Salut Muhidin (2009) Cross-National Comparisons of Internal Migration. Research Paper. UNDP. http://hdr.undp.org/en/reports/global/hdr2009/papers/HDRP_2009_30.pdf

Examples

data(migration.hyp)
migration.effectiveness(migration.hyp)
data(migration.world)
migration.effectiveness(migration.world)

daroczig/migration.indices documentation built on May 14, 2019, 6:09 p.m.