Plot pair-wise eigen values of quadratic response surface model
eigen.plot(obj, fixed.axis = TRUE)rsm object, as produced by evalRSM
Whether to use the same dimensions for each pair of variables. Allows comparison of relative width/height of ellipses
Plot of ellipses for each pair of variables, with larger width/height of ellipse indicating lower level of identifiability, and rotation of ellipse away from the vertical indicating level of interaction.
evalRSM which includes an example of eigenplot