ext.conf.cum: Extract Confidence Levels for Extinction Risk
In BruceKendall/PVA: Population viability analysis in R

Description Usage Arguments Value Author(s) Examples

For a given projection time, extract the cumulative confidence levels for the extinction risk (confidence that the true extinction risk is at or below a certain level).

1	ext.conf.cum(x, year=length(x$year))

`x`	An ext.risk object. `x$ext.boot` must not be `NULL`
`year`	The projection year at which to evaluate the confidence levels. Defaults to the last year of the PVA

A data frame with two columns:

Extinction.risk: The extinction risk

Cumulative.confidence: The confidence that the extinction risk is at or below the given value

Bruce E. Kendall (kendall@bren.ucsb.edu)

## Do a PVA of the checkerspot data
data(checkerspot)
ricker.ext <- count.DD.PVA(checkerspot$N, model="Ricker", nboot=100)

## Plot the cumulative confidence curve for the 20-year projection
plot(ext.conf.cum(ricker.ext, 20))