Lists set of rules required for catch at length aggregation
get_species_object(species_itis = NULL, stock = NA)
Numeric. Itis code for species (Default = NA, Returns a NA object for user to define)
Character string. Define stock region for species_itis (Default = NA)
A List
6 digit species ITIS code
Species Name
Species survey SVSPP code
Level of temporal aggregation: "QTR","SEMESTER","YEAR"
Data frame: mapping Market codes to use with market codes to combine
Data frame: mapping gear codes to use with gear codes to combine
Character array of statistical areas (3 characters)
How to aggregate the landings data in absense of length samples: "borrow","combine"
Where length-weight data comes from: "survey","commercial","both"
How to fit length-weight relationships. By: "semester","quarter"
Time block over which to use for length weight data: "all", c(years)
Where Age data from from: "survey","commercial"
Variables over which to calculate age length key: "semester","qtr","gear"
First year of assessment
Defines the stock, if more than one stock for a species:"GB","GOM","North","South