Any particular reason you're using I() around your poly()? That
looks weird to me ... and it works fine if you don't do that ... {AND,
I think your result is *incorrect* when you have 3 observations in your
response}.
Basically, you have managed to short-circuit the (admittedly) obscure
Hi all,
As always, thank you all for your incredible work maintaining and improving
R.
mdl <- lm(data = mtcars,
mpg ~ I(poly(disp, 2)))
predict(mdl, newdata = data.frame(disp = c(120, 120)))
#> Error in poly(disp, 2): 'degree' must be less than number of unique
points
predict(mdl, new
