Hello, The documentation of nlme::varIdent says this:
"the coefficients of the variance function represent the ratios between the variances and a reference variance (corresponding to a reference group level)"
However, the parameter estimate shown in the summary output for lme models is the ratio between standard deviations. Could this be clarified in the documentation, e.g., by adding Eq. 5.13 from Pinheiro and Bates (2000)?
-- Dr. Roland Fuß Thünen-Institut für Agrarklimaschutz/ Thünen Institute of Climate-Smart Agriculture ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
