tr.log: Sigmoid function

In PMmisc: P&M Miscellaneous R Functions

Description

Generate sigmoid curve series, which is a specific case of logistic function, with a control of top and bottom acceleration.

Usage

tr.log(x,top,a,b)

Arguments

x	:a numeric vector
top	:a numeric value as vertical scaler
a	:a number to control top acceleration of the curve
b	:a number to control bottom acceleration of the curve

Examples

 sigc <- round(tr.log(seq(-3, 3, 0.1), 1, -3, 3), 3)
ts.plot(sigc)

PMmisc documentation built on May 1, 2019, 9:57 p.m.