A class for modelling a length-structured fish stock.
Usage
FLStockLen(object, ...)
# S4 method for class 'FLQuant'
FLStockLen(object, ...)
# S4 method for class '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).
See also
[, [<-, as.FLBiol, as.FLSR, computeCatch, computeDiscards, computeLandings, plot, ssb, ssbpurec, trim, FLComp
Examples
stkl <- FLStockLen(m=FLQuant(0.2, dimnames=list(len=seq(5, 50, by=2), year=2015:2020)))
summary(stkl)
#> An object of class "FLStockLen"
#>
#> Name:
#> Description:
#> Quant: len
#> Dims: len year unit season area iter
#> 23 6 1 1 1 1
#>
#> Range: min max minyear maxyear minfbar maxfbar
#> 5 49 2015 2020 5 49
#>
# Unnamed FLQuant used for sizing
stkl <- FLStockLen(FLQuant(0.2, dimnames=list(len=seq(5, 50, by=2), year=2015:2020)))
summary(stkl)
#> An object of class "FLStockLen"
#>
#> Name:
#> Description:
#> Quant: len
#> Dims: len year unit season area iter
#> 23 6 1 1 1 1
#>
#> Range: min max minyear maxyear minfbar maxfbar
#> 5 49 2015 2020 5 49
#>
m(stkl)
#> An x of class "FLQuant"
#> , , unit = unique, season = all, area = unique
#>
#> year
#> len 2015 2016 2017 2018 2019 2020
#> 5 NA NA NA NA NA NA
#> 7 NA NA NA NA NA NA
#> 9 NA NA NA NA NA NA
#> 11 NA NA NA NA NA NA
#> 13 NA NA NA NA NA NA
#> 15 NA NA NA NA NA NA
#> 17 NA NA NA NA NA NA
#> 19 NA NA NA NA NA NA
#> 21 NA NA NA NA NA NA
#> 23 NA NA NA NA NA NA
#> 25 NA NA NA NA NA NA
#> 27 NA NA NA NA NA NA
#> 29 NA NA NA NA NA NA
#> 31 NA NA NA NA NA NA
#> 33 NA NA NA NA NA NA
#> 35 NA NA NA NA NA NA
#> 37 NA NA NA NA NA NA
#> 39 NA NA NA NA NA NA
#> 41 NA NA NA NA NA NA
#> 43 NA NA NA NA NA NA
#> 45 NA NA NA NA NA NA
#> 47 NA NA NA NA NA NA
#> 49 NA NA NA NA NA NA
#>
#> units: len