make_alk {halk}

Make an age-length key out of length-at-age data

Description

Make an age-length key out of length-at-age data

Usage

make_alk(
  laa_data,
  sizecol = "length",
  autobin = TRUE,
  binwidth = 1,
  agecol = "age",
  min_age = NULL,
  plus_group = NULL,
  numcol = NULL,
  min_age_sample_size = 5,
  min_total_sample_size = min_age_sample_size * min_age_groups,
  min_age_groups = 5,
  warnings = TRUE
)

Arguments

laa_data

A data.frame with length-at-age data

sizecol

Character string naming the column that holds size data

autobin

Logical. Should the function automatically assign length bins (default is TRUE)

binwidth

Numeric. If autobin = TRUE this is the width for the size bins

agecol

Character string naming the column that holds age data

min_age

Numeric. All ages less than this value will not be used in ALK

plus_group

Numeric value of the oldest age to include in the ALK. All older individuals will be included in this plus group

numcol

Character string naming the column that holds numbers data

min_age_sample_size

Only applicable to alk models. The minimum number of samples that must be in each age group in order to create an alk

min_total_sample_size

Only applicable to alk models. The minimum number of samples that must be in data in order to create an alk

min_age_groups

Only applicable to alk models. The minimum number of age groups that must be in data in order to create an alk

warnings

Logical. Display warnings (TRUE, default)

Value

A data.frame containing the proportions of records for each size that are at each age.

Examples

make_alk(laa_data)