vft.4p {vitality}

Vectorized density function

Description

This function is used in the calculation of the fitted intrinsic (mu.vd1.4p) and total (mu.vd.4p) mortality rate in the 4-parameter model.

Usage

  vft.4p(xx, r, s, u)

Arguments

xx

vector of ages

r

r value

s

s value

u

u value

Value

vector of densities

See Also

ft.4p