hdr: Calculate highest density regions for Bchron calibrated ages
Description
A function for computing highest density regions (HDRs)
Usage
hdr(date, prob = 0.95)
Value
A list where each element is one of the contiguous sets making up the HDR
Arguments
date
A calibrated Bchron date, via e.g. BchronCalibrate
prob
The desired probability interval, in the range(0, 1)
Details
The output of this function is a list of contiguous ranges which cover the probability interval requested. A highest density region might have multiple such ranges if the calibrated date is multi-modal. These differ from credible intervals, which are always contiguous but will not be a good representation of a multi-modal probability distribution.