upperHull: Compute the Upper Hull

In bsearchinger/ARS: Adaptive Rejection Sampling

Description

upperHull calculates the y-values corresponding to the upper hull formed from the tangents to a function.

Usage

upperHull(
  x,
  x_abs,
  f,
  f_params = NULL,
  supp = c(-Inf, Inf),
  z = NULL,
  hx = NULL,
  dhdx = NULL
)

Arguments

x	A numeric vector representing x values
x_abs	A numeric vector of length k for k > 1, representing the abscissae.
f	A function representing the target sampling distribution.
f_params	A list of any associated parameters of f.
supp	The support of f, as a two-membered numeric vector. Default is c(-Inf, Inf)
z	The tangent intersection points at given abscissae.
hx	The log of the density f at point x
dhdx	The derivative of the log of the density f at point x

Value

A named list containing the y-values of the upper hull.

bsearchinger/ARS documentation built on Dec. 19, 2021, 12:44 p.m.