searchdrc: Searching through a range of initial parameter values to obtain convergence
Description
'searchdrc' provides a facility for searching through a range of parameter values (one-dimensional)
in order to obtain convergence of the estimation procedure.
Usage
searchdrc(object, which, range, len = 50)
Arguments
object
an object of class 'drc'. The object can be from a model that could not fitted.
which
a character string containing the parameter name
range
a numeric vector of length 2 specifying the interval endpoints for the range.
len
numeric. The number of points in the interval.
Value
An object of class 'drc'.
Details
The function goes through the range with increments such that in total at most len sets of parameter values
are used as initial values for the estimation procedure. You would need to identify the parameter which is most likely to
cause problems for the estimation procedure.