demography (version 2.0)

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)

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.

Arguments

obj1

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

obj2

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

Author

Rob J Hyndman

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)