numeric vector. Specifies which parameters are fixed and at what value they are fixed.
NAs for parameter that are not fixed.
names
a vector of character strings giving the names of the parameters (should not contain ":").
The order of the parameters is: b, c, d, e, f (see under 'Details').
Value
An object containing with all components needed in multdrc.
Details
The model is also called the logistic model (different from the log-logistic model!).