change_pop_bin: Set up population length bin structure

In ss3sim: Fisheries Stock Assessment Simulation Testing with Stock Synthesis

Description

The population length bins in Stock Synthesis structure size data and empirical weight-at-age data. change_pop_bin changes the data file to contain specifications to create a vector (length-bin method of 2) rather than the actual bins from the length data (length-bin method of 1) or an actual vector (length-bin method of 3).

Usage

change_pop_bin(dat_list, binwidth = NULL, minimum_size = NULL,
  maximum_size = NULL, maximum_age = NULL)

Arguments

dat_list	An SS data list object as read in from SS_readdat in the r4ss package. Make sure you select option section=2.
binwidth	A numeric value specifying the width of the size bins.
minimum_size	The smallest size bin.
maximum_size	The largest size bin.
maximum_age	The highest age. Used to structure the maximum age of the population and the ageing-error matrix, which will be assumed to have no bias and maximum precision for any added ages.

Details

The only required argument is dat_list and the remaining arguments default to a value of NULL, which leads to the data file not being changed.

Value

A modified Stock Synthesis data file in list form. The list is only returned if it is assigned to an object.

ss3sim documentation built on Nov. 9, 2019, 1:06 a.m.