lhEql: Derives an 'FLBRP' from life history parameters

In flr/FLife: Methods for Modelling Life History Traits

Derives an FLBRP from life history parameters

Description

Takes an FLPar object with life history and selectivity parameters and generates a corresponding FLBRP object. Can use a range of functional forms.

Usage

## S4 method for signature 'FLPar'
lhEql(
  params,
  growth = FLife::vonB,
  m = "gislason",
  sr = "bevholt",
  mat = logistic,
  sel = dnormal,
  range = c(min = 0, max = 40, minfbar = 1, maxfbar = 40, plusgroup = 40),
  spwn = 0,
  fish = 0.5,
  midyear = 0.5,
  ...
)

Arguments

params	an FLPar object with life history parameters
growth	function that takes an FLPar object with parameters, by default vonB
m	character takes the natural mortality model name, by default gislason
sr	character value, "bevholt" by default
mat	function that takes an FLPar object with parameters, by default logistic
sel	function that takes an FLPar object with parameters, by default dnormal
range	numeric with age range by default from 0 to 40
spwn	numeric give propotion of year when spawning occurs, by default is params["a50"]-floor(params["a50"])
fish	numeric give propotion of year when fishing occurs, by default 0.5
midyear	when growth measured, default 0.5
...	any other arguments
units	character for vectors in FLBRP returned by method

Value

FLBRP object

See Also

lhPar, lhRef

vonB lorenzen sigmoid

Examples

## Not run: 
data(teleost)
alb=teleost[,"Thunnus alalunga"]
eql=lhEql(lhPar(alb))

## End(Not run)

flr/FLife documentation built on March 29, 2024, 5:50 p.m.