f5pl {ELISAtools}

The five-parameter logistic function

Description

read in the paramters and the independent variable value(s), and then return the 5pl function value(s). For the 4pl model, set g to be 1.

Usage

f5pl(pars, x)

Arguments

pars

numeric the parameters of the 5pl (or 4pl). It has the following content: [a, d, xmid, scal, g].

x

numeric the log-transformed x value(s).

Details

The function has the following form
f(x)=a+(d-a)/((1+exp((xmid-x)/scal))^g)

Value

the 5pl function value(s).