Growth state at the start of a year

Evaluates the curve a stratum starts from and the quantities that stay fixed over the years: the mean length at the start of every age in the first year (the plus group adjusted), the CV at age and timing when it is kept at the first year's sizes, and the asymptote.

Usage

growth_start_state(
  growth_pars,
  ages,
  growth_A1,
  growth_A2,
  growth_L0,
  growth_cv_type,
  growth_sd_type,
  growth_plus_group,
  growth_L2_asymptote = 0
)