Calculate region-level age composition and mean/std.dev length at age

Usage

calc_agecomp_region(
  gapdata = NULL,
  racebase_tables = lifecycle::deprecated(),
  agecomp_stratum = NULL,
  age_comps_stratum = lifecycle::deprecated()
)

Arguments

gapdata: data object created from gapindex::get_data()
racebase_tables: Use the gapdata argument instead.
agecomp_stratum: a named list of stratum age comps and numbers by survey/year/stratum/sex/length, a result object from gapindex::calc_agecomp_stratum().
age_comps_stratum: Use the agecomp_stratum argument instead.

Value

dataframe of age composition and mean/standard deviation of length at age aggregated across regions.

Field	Description
LENGTH_MM_MEAN	Mean length (millimeters)
LENGTH_MM_SD	Variance of mean length.
POPULATION_COUNT	The estimated population caught in the survey for a species, group, or total for a given survey.
SEX	Sex of a specimen where "1" = "Male", "2" = "Female", "3" = Unsexed.
SPECIES_CODE	The species code of the organism associated with the common_name and scientific_name columns. For a complete species list, review the code books.
SURVEY_DEFINITION_ID	The survey definition ID key code is an integer that uniquely identifies a survey region/survey design. The column survey_definition_id is associated with the srvy and survey columns. Full list of survey definition IDs are in RACE_DATA.SURVEY_DEFINITIONS and in the code books.
YEAR	Year the observation (survey) was collected.
AGE	Age bin of taxon. Age bin of a taxon in years estimated by the age comp estimate. Age -9 indicates unaged lengths for a particular sex because no otoliths were collected for that sex/length combination. Age -99 indicates a case where no lengths were collected within a stratum for a species/year even though catch numbers were recorded.
AREA_ID_FOOTPRINT	Survey footprint, usually equivalent to the SURVEY_DEFINITION_ID with the exception of the Standard and Standard +NW survey footprints in the Eastern Bering Sea shelf bottom trawl survey
AREA_ID	Area ID key code for each statistical area used to produce production estimates (e.g., biomass, population, age comps, length comps). Each area ID is unique within each survey.