| NLSstAsymptotic {nls} | R Documentation |
Fit the Asymptotic Regression Model
Description
Fits the asymptotic regression model, in the form b0 +
b1*exp(-exp(lrc) * x) to the xy data.
This can be used as a building block in determining starting estimates
for more complicated models.
Usage
NLSstAsymptotic(xy, yval)
Arguments
xy |
a |
Value
A numeric value of length 3 with components labelled b0,
b1, and lrc
Author(s)
Jose Pinheiro and Douglas Bates
See Also
SSasymp
Examples
library( nls )
data( Loblolly )
Lob.329 <- Loblolly[ Loblolly$Seed == "329", ]
NLSstAsymptotic(sortedXyData(expression(age), expression(height), Lob.329 ))