A fleet object has all the required characteristics of a fishing fleet
Methods
Method new()
Parameters for specific metier of a given fleet
Usage
Metier$new(
critter = NA,
price = 10,
sel_form = "logistic",
sel_unit = "p_of_mat",
sel_start = 1,
sel_delta = 0.1,
sel05_anchor = NULL,
sel_at_linf = NULL,
catchability = 0.2,
spatial_catchability = NA,
p_explt = 1,
sel_at_age = NULL
)
Arguments
critter
the name of the critter in the fauna object this metier applies to
price
the price per unit weight of the critter in question
sel_form
the selectivity form, one of "logistic", "dome","uniform", or "manual"
sel_unit
the unit of selectivity, one of "p_of_mat" which means selectivity is in proportion of age at maturity, or "length" where selectivity is in units of length
sel_start
the value of sel_unit at which selectivity "starts"
sel_delta
the delta parameter in the selectivity function
sel05_anchor
lower anchor at which (contact) selectivity is 0.05, either length or p_of_mat
sel_at_linf
contact selectivity at linf
catchability
the catchability per uni effort pararmeter, generally overwritten by tune_fleet
spatial_catchability
a matrix of spatial q
p_explt
the proportion of total exploitation for a given critter coming from this metier. This value is relative to all other p_explt values for the critter in question. Set to 0 to have metier not catch critter at all
sel_at_age
a manual vector of gear (contact) selectivity at age, where values are between 0 and 1