Calculate net migration from mortality and fertility data — netmigration • demography

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.

Usage

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

Arguments

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.

Value

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

See also

Author

Rob J Hyndman

Examples

if (FALSE) {
require(addb)
aus.mig <- netmigration(australia,aus.fertility)
plot(aus.mig)}