Guess the horizontal asymptote on the right side
Usage
NLSstRtAsymptote(xy)
Arguments
Description
This function provides an initial guess at the horizontal asymptote on
the right side (larger values of x
) of the graph of y
versus x
from the xy
object. It is mostly used within the
initial
functions for a self-starting nonlinear regression
models, which are in the selfStart
class.Value
A single numeric value which is a guess at the y
value that
would be the asymptote for large x
.Author(s)
Jose Pinheiro and Douglas BatesExamples
library( lme )
data( DNase )
DNase.2 <- DNase[ DNase$Run == "2", ]
DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 )
NLSstRtAsymptote( DN.srt )