Calculate F/M given SPR and other parameters

A internal function that optimizes for F/M when SPR is provided in the simulation parameters.

getFMfun(FM, LB_pars, Control = list())

Arguments

FM	a F/M value
LB_pars	an object of class 'LB_pars' that contains the life history information
Control	a list of control options for the LBSPR model.

Value

sum of squares value

Details

The Control options are:

modtype

Model Type: either Growth-Type-Group Model (default: "GTG") or Age-Structured ("absel")

maxsd

Maximum number of standard deviations for length-at-age distribution (default is 2)

ngtg

Number of groups for the GTG model. Default is 13

P

Proportion of survival of initial cohort for maximum age for Age-Structured model. Default is 0.01

Nage

Number of pseudo-age classes in the Age Structured model. Default is 101

maxFM

Maximum value for F/M. Estimated values higher than this are trunctated to maxFM. Default is 4