Initializes a population for a given virgin biomass.

Abundances at age for a population at virgin conditions at age. An FLBiol object is initiated by providing a target total biomass (B0) and a value for the stock-recruit steepness (s). The object requires slots to be already filled up for the mean weight-at-age (wt), natural mortality (m), time of spawning (spwn) and maturity at age (mat).

Usage

initiate(biol, B0, h = 0.75)

Arguments

biol: An FLBiol object to nbe initiated.
B0: Initial or virgin biomass.

Value

An updated FLBiol with abundances set in the first year to match the requested biomas.

Examples

data(ple4.biol)
#> Warning: namespace ‘dplyr’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘ple4.biol’
#> Warning: namespace ‘remotes’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘ple4.biol’
#> Warning: namespace ‘xtable’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘ple4.biol’
#> Warning: namespace ‘shiny’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘ple4.biol’
#> Warning: namespace ‘htmlwidgets’ is not available and has been replaced
#> by .GlobalEnv when processing object ‘ple4.biol’
if (FALSE) { # \dontrun{
initiate(ple4.biol, B0=450000)
# Sets up parallel
# plan(multisession, workers=4)
initiate(propagate(ple4.biol, 100), B0=runif(100, 3e5, 5e5))
} # }