demography: combine.demogdata – R documentation

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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.

Author(s)

Rob J Hyndman

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)

demography

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