buffer.hcr: A buffered and non-linear hockeystick HCR
In flr/mse: Tools for Running Management Strategy Evaluations using FLR

buffer.hcr

R Documentation

A buffered and non-linear hockeystick HCR

Description

A Harvest Control Rule (HCR) that extends the traditional hockeystick shape by allowing for increasing output when stock status rises above a buffer set around the target.

Usage

buffer.hcr(
  stk,
  ind,
  target,
  metric = "depletion",
  lim = 0.1,
  bufflow = 0.3,
  buffupp = 0.5,
  sloperatio = 0.2,
  initac = NULL,
  dupp = NULL,
  dlow = NULL,
  all = TRUE,
  ...,
  args,
  tracking
)

Arguments

`lim`	Point at which the HCR response moves from linear to quadratic in terms of reducing HCR multiplier, numeric.
`bufflow`	Lower point of "buffer zone" where HCR response is fixed at 1.
`buffupp`	Upper point of "buffer zone" where HCR response is fixed at 1.
`sloperatio`	fractional difference so the response of the HCR in this case would be as follows: if(muI > Ilim & muI <= buffl) HCRmult <- (0.5*(1+(muI-Ilim)/(buffl-Ilim))) if(muI > buffl & muI < buffh) HCRmult <- 1 if(muI >= buffh) HCRmult <- 1+sloperatiogr(muI-buffh) if(muI <= Ilim) HCRmult <- (muI/Ilim)^2/2