LBSPR_NLLgtg: LBSPR Optimization function for GTG model

In LBSPR: Length-Based Spawning Potential Ratio

Description

Internal optimization function

Usage

LBSPR_NLLgtg(
  starts,
  LMids,
  LBins,
  LDat,
  gtgLinfs,
  MKMat,
  MK,
  Linf,
  ngtg,
  recP,
  usePen
)

Arguments

starts	a vector of starting parameters, relative SL50 (SL50/Linf), deltaSL (SL95-SL50)/Linf, and F/M (in log space)
LMids	a vector of the midpoints of the length classes
LBins	a vector of length classes
LDat	a vector of lenght frequencies. Must be same length as LMids
gtgLinfs	a vector of Linfs for the growth-type-groups
MKMat	a matrix of M/K for each GTG and length-class
MK	the M/K value
Linf	the Linf value for the population as a hole
ngtg	the number of growth-type-groups
recP	a vector of recruitment by GTG
usePen	logical to use penalty for extreme estimates of selectivity

Value

negative log-likelihood value

Author(s)

A. Hordyk

LBSPR documentation built on Oct. 6, 2021, 5:16 p.m.