This function is adapted from the plot.fr function from the hoa package bundle.
It differs from the latter mostly in the placement of legends.
Usage
# S3 method for fr
plot(x, ...)Details
Plots produced depend on the integers provided in which. 1 displays the Wald pivot, the likelihood root r, the modified likelihood root rstar and the likelihood modification q as functions of the parameter psi. 2 gives the renormalized profile log likelihood and adjusted form, with the maximum likelihood having ordinate value of zero. 3 provides the significance function, a transformation of 1. Lastly, 4 plots the correction factor as a function of the likelihood root; it is a diagnostic plot aimed for detecting failure of
the asymptotic approximation, often due to poor numerics in a neighborhood of r=0; the function should be smooth. The function spline.corr is designed to handle this by correcting numerically unstable estimates, replacing outliers and missing values with the fitted values from the fit.