demography: migration – R documentation

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migration

Calculate net migration from mortality and fertility data

Function to compute the net number of migrants in each year and for each age, based on the total population numbers, deaths and births in each year.

netmigration(mort, fert, startyearpop=mort, mfratio = 1.05)

`mort`	Demogdata object of type `"mortality"`
`fert`	Demogdata object of type `"fertility"`
`startyearpop`	Demogdata object containing population data for first year of calculation.
`mfratio`	Male-female ratio to be used in simulating births.

Object of class “demogdata” with the following components:

`year`	Vector of years
`age`	Vector of ages
`rate`	List containing matrices of net migration numbers (not "rates") with with one age group per row and one column per year. Names of matrices are the same as for `mort$rate`.
`pop`	List containing matrices of populations in same form as `rate` and containing population numbers.
`type`	Type of object. In this case, “migration”.
`label`	label from `mort$label`

Rob J Hyndman

## Not run: 
require(addb)
aus.mig <- netmigration(australia,aus.fertility)
plot(aus.mig)
## End(Not run)

Forecasting Mortality, Fertility, Migration and Population Data

v1.22

GPL (>= 2)

Authors

Rob J Hyndman with contributions from Heather Booth, Leonie Tickle and John Maindonald.

Initial release