This doesn't seem intended. See:
https://stackoverflow.com/questions/79795583/why-does-poly-work-for-unordered-factors-it-previously-did-not-work -- Dr. Roland Fuß Thünen-Institut für Agrarklimaschutz/ Thünen Institute of Climate-Smart Agriculture Bundesallee 65 D-38116 Braunschweig, Germany ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
