No matter what get F = ftrg The control argument is a list of parameters used by the HCR.
Examples
data(sol274)
#> Warning: namespace ‘patchwork’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘dplyr’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘TMB’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘remotes’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘shiny’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘htmlwidgets’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘xtable’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘FLAssess’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
#> Warning: namespace ‘FLSRTMB’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘om’
fixedF.hcr(stock(om), ftrg=0.13, args=list(ay=2017, management_lag=1,
frq=1), tracking=FLQuant())
#> $ctrl
#> An object of class "fwdControl"
#> (step) year quant min value max
#> 1 2018 fbar NA 0.130 NA
#>
#> $tracking
#> An object of class "FLQuant"
#> , , unit = unique, season = all, area = unique
#>
#> year
#> quant 1
#> all NA
#>
#> units: NA
#>
