This function returns an ellipse or other outline of a confidence region
for two parameters.
This is a generic function.
Functions with names beginning in ellipse. will be
methods for this function:
lm, nls, profile, profile.nls are currently implemented.
Usage
ellipse(x, ...)
Arguments
x
An object.
...
Each of the specialized types uses different optional parameters.
Value
A matrix is returned with two columns outlining an ellipse or a
confidence region.
# Plot an ellipse corresponding to a 95\% probability region for a# bivariate normal distribution with mean 0, unit variances and # correlation 0.8.plot(ellipse(0.8), type = 'l')