lhEql: Derives an 'FLBRP' from life history parameters

In laurieKell/FLCandy: Candidate methods for FLR

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

bhz(lfd, par)

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
mat	function that takes an FLPar object with parameters, by default logistic
sel	function that takes an FLPar object with parameters, by default dnormal
sr	character value, "bevholt" by default
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
units	character for vectors in FLBRP returned by method
midyear	when growth measured, default 0.5
...	any other arguments

Value

FLBRP object

See Also

lhPar, lhRef

vonB lorenzen sigmoid

Examples

## Not run: 
load("lfd.1.RData")
load("design.RData")
par=lhs[["Pollachius pollachius"]]
par=rbind(FLPar("lc"=FLife:::vonB(par["sel1"],par)),par)
z=bhz(lfd,par)
plot(z)

## End(Not run)

laurieKell/FLCandy documentation built on April 17, 2025, 5:23 p.m.