r4ss (version 1.44.0)

SSmakeMmatrix: Convert a matrix of natural mortality values into inputs for Stock Synthesis

Description

Inspired by Valerio Bartolino and North Sea herring

Usage

SSmakeMmatrix(
  mat,
  startyr,
  outfile = NULL,
  overwrite = FALSE,
  yrs.in.columns = TRUE
)

Arguments

mat

a matrix of natural mortality by year and age, starting with age 0

startyr

the first year of the natural mortality values (no missing years)

outfile

optional file to which the results will be written

overwrite

if 'outfile' is provided and exists, option to overwrite or not

yrs.in.columns

an indicator of whether the matrix has years in columns or rows

Value

Prints inputs with option to write to chosen file