double_logistic: Double logistic function

In kklot/ktools: Miscellaneous tools

Double logistic function

Description

Double logistic function have two periods each with a logistic shape, either one of them will be decreasing and the other increases.

Usage

double_logistic(
  x = seq(0, 10, 0.01),
  bound1 = 0,
  bound2 = 1,
  rate1 = 2,
  rate2 = 5,
  midpoint1 = 3,
  midpoint2 = 7
)

Arguments

x	time horizon
bound1	the boundary of function (this will equals the function value at time zero)
bound2	the second boundary, if bound1 > bound2 the function increase first then decrease, and vice versa.
rate1	rate of change of first period, control the sharpness of changes
rate2	rate of change of second period, control the sharpness of changes
midpoint1	midpoint where the chance occurs in the first period
midpoint2	midpoint where the chance occurs in the second period

Value

vector of length x

See Also

logistic

Examples

plotl(double_logistic(bound1=0.1, bound2=0.8))
plotl(double_logistic(bound1=0.8, bound2=0.1))

kklot/ktools documentation built on Aug. 13, 2024, 7:08 p.m.