dat.update: This takes simulated data from the operating model pop...
In mcoshima/moMSE: Functions for Running a Management Strategy Evaluation

This takes simulated data from the operating model pop dynamics and adds it in the correct format to the .dat file for SS.

dat.update(
  year,
  dat.list,
  dat.,
  agecomp.list,
  I,
  .datcatch,
  comp.I = NULL,
  dir.,
  write = T
)

`year`	last year in sequence of new data
`dat.list`	list that has the sequence of years
`dat.`	data file that needs to be updated
`agecomp.list`	simulated age comps from catch
`I`	simulated indices of abundance for each fleet. Default is NULL and competition index will not be included in assessment.
`.datcatch`	A dataframe with the catch for each fishing fleet in the correct units (biomass and numbers)
`comp.I`	index of red snapper abundance, a measure of competition
`dir.`	directory of where to read and write new files from/to
`write`	default set to TRUE, if FALSE, new .dat file will not be saved (won't overwrite the old file)