HCRlin: Generic linear harvest control rule based on biomass
In SAMtool: Stock Assessment Methods Toolkit

HCRlin

R Documentation

Generic linear harvest control rule based on biomass

Description

A general function used by HCR_ramp that adjusts the output (e.g., F) by a linear ramp based on the value of the OCP relative to target and limit values.

Usage

HCRlin(OCP_val, LOCP, TOCP, relF_min = 0, relF_max = 1)

Arguments

`OCP_val`	The value of the operational control point (OCP).
`LOCP`	Numeric, the limit value for the OCP in the HCR.
`TOCP`	Numeric, the target value for the OCP in the HCR.
`relF_min`	The relative maximum value (e.g. a multiple of FMSY) if `OCP < LOCP`.
`relF_max`	The relative maximum value (e.g. a multiple of FMSY) if `OCP > TOCP`.

Value

Numeric adjustment factor.

Author(s)

T. Carruthers

Examples

#40-10 linear ramp
Brel <- seq(0, 1, length.out = 200)
plot(Brel, HCRlin(Brel, 0.1, 0.4), xlab = "Estimated B/B0", ylab = "Relative change in F",
     main = "A 40-10 harvest control rule", type = 'l', col = 'blue')
abline(v = c(0.1,0.4), col = 'red', lty = 2)

SAMtool documentation built on Sept. 11, 2024, 8:07 p.m.