demography (version 1.11)

combine.demogdata: Combine two demogdata objects into one demogdata object

Description

Function to combine demogdata objects containing different years but the same age structure into one demogdata object. The standard use for this function will be combining historical data with forecasts. The objects must be of the same type.

Usage

combine.demogdata(obj1, obj2)

Arguments

obj1

First demogdata object (e.g., historical data).

obj2

Second demogdata object (e.g., forecasts).

Value

• Object of class demogdata with the following components:
• year
  Vector of years
• age
  Vector of ages
• rate
  Matrix of rates with with one age group per row and one column per year.
• pop
  Matrix of populations in same form as rate and containing population numbers. This is only produced when both objects contain a pop component.
• type
  Type of object: mortality, fertility or migration.
• label
  Name of area from which the data are taken.

See Also

demogdata

Examples

fit <- fdm(fr.mort)
fcast <- forecast(fit, h=50)
france2 <- combine.demogdata(fr.mort,fcast)
plot(france2)
plot(life.expectancy(france2))
lines(rep(max(fr.mort$year)+0.5,2),c(0,100),lty=3)