growth_logistic: Logistic growth

In popstudy: Applied Techniques to Demographic and Time Series Analysis

Logistic growth

Description

Given two pivots and limits, estimates the growth assuming a logistic behavior.

Usage

growth_logistic(pivot_values, pivot_years, upper, lower, t)

Arguments

pivot_values	numeric. Reference values to estimate, like TFR for two specific years.
pivot_years	numeric. Reference years to estimate for both values in pivot_values.
upper	numeric. Upper asymptotic value.
lower	numeric. Lower asymptotic value.
t	numeric. Year to get logistic value.

Value

growth_logistic returns the logistic estimation for specified year.

Author(s)

Cesar Gamboa-Sanabria

References

\insertRef

growth_exppopstudy

See Also

growth_exp, growth_linear

Examples

# Given TFR values 3.32 and 2.85 for the years 1986 and 1991, respectively,
# estimate the TFR in 1987 assuming 1.5 as lower limit and 8 as upper limit.

growth_logistic(pivot_values = c(3.32, 2.85), pivot_years = c(1986, 1991),
upper = 8, lower=1.5, t=1987)

popstudy documentation built on Oct. 18, 2023, 1:20 a.m.