Either a fitted model object (of class evd)
for Wald confidence intervals, or a profile trace (of class
profile.evd) for profile likelihood confidence intervals.
parm
A character vector of parameters; a confidence
interval is calculated for each parameter. If missing, then
intervals are returned for all parameters in the fitted model
or profile trace.
level
A single number giving the confidence level.
…
Not used.
Value
A matrix with two columns giving lower and upper confidence
limits.