formula.nlme {nlme} | R Documentation |
This method function extracts the nonlinear model formula
associated with x
.
formula(x, ...)
x |
an object inheriting from class nlme , representing
a fitted nonlinear mixed-effects model. |
... |
some methods for this generic require additional arguments. None are used in this method. |
a two-sided nonlinear formula specifying the model used to
obtain x
.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
data(Loblolly) fm1 <- nlme(height ~ SSasymp(age, Asym, R0, lrc), data = Loblolly, fixed = Asym + R0 + lrc ~ 1, random = Asym ~ 1, start = c(Asym = 103, R0 = -8.5, lrc = -3.3)) formula(fm1)