ellipse.profile.nls {ellipse} | R Documentation |
This is the version of ellipse.profile specific to profiles from nls objects. See ellipse.profile for the description.
ellipse.profile.nls(x, level=0.95, t=sqrt(2 * qf(level, 2, attr(x,"su mmary")$df[2])), ...)
Produces a plot on the current device for each pair of variables in the profile object. This function implements the plots used in Bates and Watts (1988) for nonlinear regression diagnostics.
Bates and Watts (1988), Nonlinear Regression Analysis & its Applications.
profile, ellipse.profile, ellipse.nls
# Plot everything for the Puromycin data data(Puromycin) Purboth <- nls(formula = rate ~ ((Vm + delV * (state == "treated"))* conc)/(K + conc), data = Puromycin,start = list(Vm = 160, delV = 40, K = 0.05)) Pur.prof <- profile(Purboth) pairs(Pur.prof, plot.ellipse=T)