Confidence interval for an extrapolated asymptote

Returns the calibrated bootstrap interval stored on the fit by default. With method = "profile" the (over-confident) nls profile interval is computed instead. The interval is for the asymptote parameter; see the bias caveat in extrapolate().

Usage

# S3 method for class 'spacc_fit'
confint(object, parm, level = 0.95, method = c("stored", "profile"), ...)

Arguments

object

A spacc_fit object.

parm

Ignored; the asymptote ("a") is always returned.

level

Confidence level. Recomputed from stored bootstrap draws.

method

"stored" (default) or "profile".

...

Passed to stats::confint() when method = "profile".

Value

A 1-row matrix with the lower and upper bound for a.