plot object (from predict.lm.rrpp)

A logical argument for whether the data space should be rotated to its principal components

A logical argument to change error bars to ellipses in multivariate plots. It has no function for univariate plots or is abscissa is not NULL.

An optional vector (numeric of factor) equal in length to predictions to use for plotting as the abscissa (x-axis), in which case predictions are the ordinate (y-axis). This might be helpful if predictions are made for a continuous independent variable. The abscissa would be the same variable used to make predictions (and can be the data.frame used for newdata in predict.lm.rrpp).

A logical argument for whether points should be labeled (in multivariate plots).

other arguments passed to plot, arrows, points, or text (helpful to employ different colors or symbols for different groups). See plot.default, arrows, points, par, and text