FLStockLen: Class FLStockLen
In flr/FLCore: Core Package of FLR, Fisheries Modelling in R

FLStockLen

R Documentation

Class FLStockLen

Description

A class for modelling a length-structured fish stock.

Usage

FLStockLen(object, ...)

## S4 method for signature 'FLQuant'
FLStockLen(object, ...)

## S4 method for signature 'missing'
FLStockLen(object, ...)

Details

The FLStockLen object contains a length based representation of a fish stock. This includes information on removals (i.e. catches, landings and discards), maturity, natural mortality and the results of an analytical assessment (i.e. estimates of abundance and removal rates).

Slots

halfwidth: The middle of the length bins (numeric).
catch: Total catch weight (FLQuant).
catch.n: Catch numbers (FLQuant).
catch.wt: Mean catch weights (FLQuant).
discards: Total discards weight (FLQuant).
discards.n: Discard numbers (FLQuant).
discards.wt: Mean discard weights (FLQuant).
landings: Total landings weight (FLQuant).
landings.n: Landing numbers (FLQuant).
landings.wt: Landing weights (FLQuant).
stock: Total stock weight (FLQuant).
stock.n: Stock numbers (FLQuant).
stock.wt: Mean stock weights (FLQuant).
m: Natural mortality (FLQuant).
mat: Proportion mature (FLQuant).
harvest: Harvest rate or fishing mortality. The units of this slot should be set to 'harvest' or 'f' accordingly (FLQuant).
harvest.spwn: Proportion of harvest/fishing mortality before spawning (FLQuant).
m.spwn: Proportion of natural mortality before spawning (FLQuant).
name: Name of the stock (character).
desc: Description of the stock (character).
range: Named numeric vector containing the quant and year ranges, the plusgroup and the quant range that the average fishing mortality should be calculated over (numeric).

Author(s)

The FLR Team

Examples

stkl <- FLStockLen(m=FLQuant(0.2, dimnames=list(len=seq(5, 50, by=2), year=2015:2020)))
summary(stkl)
# Unnamed FLQuant used for sizing
stkl <- FLStockLen(FLQuant(0.2, dimnames=list(len=seq(5, 50, by=2), year=2015:2020)))
summary(stkl)
m(stkl)

flr/FLCore documentation built on May 4, 2024, midnight