As described by Davidian and Giltinan, "Data from an experiment to compare growth patterns of two genotypes of soybeans: Plant Introduction #416937 (P), and experimental strain, and Forrest (F), a commercial variety." A more complete description is given on page 7 of Davidian and Giltinan (1995).
This data frame contains the following columns:
These data are described in section 1.1.3 of Davidian and Giltinan (1995), "Nonlinear Models for Repeated Measurement Data", Chapman and Hall, London.
Soybean.lis <- nlsList(weight ~ logistic(time, Asym, T50, scal), data = Soybean, cluster = ~ Plot) Soybean.nlme <- nlme(Soybean.lis)