hdr_table: Table of Highest Density Regions

In weird: Functions and Data Sets for "That's Weird: Anomaly Detection Using R" by Rob J Hyndman

Table of Highest Density Regions

Description

Compute a table of highest density regions (HDR) for a distributional object. The HDRs are returned as a tibble with one row per interval and columns: prob (giving the probability coverage), density (the value of the density at the boundary of the HDR), For one dimensional density functions, the tibble also has columns lower (the lower ends of the intervals), and upper (the upper ends of the intervals).

Usage

hdr_table(object, prob)

Arguments

object	Distributional object such as that returned by dist_kde()
prob	Vector of probabilities giving the HDR coverage (between 0 and 1)

Value

A tibble

Author(s)

Rob J Hyndman

Examples

# Univariate HDRs
c(dist_normal(), dist_kde(c(rnorm(100), rnorm(100, 3, 1)))) |>
  hdr_table(c(0.5, 0.95))
dist_kde(oldfaithful$duration) |> hdr_table(0.95)
# Bivariate HDRs
dist_kde(oldfaithful[, c("duration", "waiting")]) |> hdr_table(0.90)

weird documentation built on Jan. 27, 2026, 9:06 a.m.