migration.connectivity | R Documentation |

The Migration Connectivity Index measures "the proportion of the total number of potential interregional flows which are not zero":

*I_{MC} = ∑_i ∑_{j \neq i} \frac{MC_{ij}}{n(n-1)}*

where *MC_{ij}* is 0 if the flow from *i* to *j* is zero and let it be 1 otherwise.

migration.connectivity(m)

`m` |
migration matrix |

A number between 0 and 1 where zero shows no connections between regions.

M. Bell, M. Blake, P. Boyle, O. Duke-Williams, P. Rees, J. Stillwell and G. Hugo (2002) Cross-National Comparison of Internal Migration. Issues and Measures.

*Journal of the Royal Statistical Society. Series A (Statistics in Society)***165**, 435–464

data(migration.hyp) migration.connectivity(migration.hyp) data(migration.world) migration.connectivity(migration.world)

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