demography (version 1.11)

netmigration: Calculate net migration from mortality and fertility data

Description

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, mfratio = 1.05)

Arguments

mort

Demogdata object of type "mortality"

fert

Demogdata object of type "fertility"

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

demogdata

Examples

require(addb)
aus.mig <- netmigration(australia,aus.fertility)
plot(aus.mig)