Skip to contents

Calculate uncertainty and biases in historic composition data

Usage

calc_comp_var(
  data_obs,
  data_exp,
  bins,
  fleets = NULL,
  years = NULL,
  seasons = NULL,
  merge_sexes = TRUE,
  sexes = NULL,
  merge_seasons = TRUE,
  merge_fleets = FALSE
)

Arguments

data_obs

A data frame of observed composition data extracted from SS3 .dat file

data_exp

A data frame of the expected composition data as estimated by an SS3 assessment model

bins

A vector object including the composition bins

fleets

A vector of the fleet numbers to analyze composition uncertainty for (Default is all fleets if NULL)

years

A vector of the years to include when calculating composition uncertainty (Default is all years if NULL)

seasons

A vector of the seasons to include when calculating composition uncertainty (Default is all years if NULL)

merge_sexes

TRUE/FALSE should sexes be merged to calculate variance and biases (Defaults to TRUE)

sexes

A vector of the sexes to analyze composition uncertainty for (Default is all sexes if NULL)

merge_seasons

TRUE/FALSE should seasons be merged to calculate variance and biases (Defaults to TRUE)

merge_fleets

TRUE/FALSE should fleets be merged to calculate variance and biases (Defaults to FALSE)

Value

A list object with uncertainty and bias characteristics to inform data simulation.

Author

Nathan R. Vaughan