Access quick convergence checks from `TMB` and `nlminb`.
check_convergence(mod, ret = FALSE, f = "")
output from fit_wham
T/F, return list? Default = FALSE, just prints to console
a list with at least the first three of these components:
$convergence
From stats::nlminb
, "0 indicates successful convergence for nlminb"
$maxgr
Max absolute gradient value, from `max(abs(mod$gr(mod$opt$par)))`
$maxgr_par
Name of parameter with max gradient
$is_sdrep
If TMB::sdreport
was performed
for this model, this indicates whether it performed without error
$na_sdrep
If TMB::sdreport
was performed
without error for this model, this indicates which (if any) components of the
diagonal of the inverted hessian were returned as NA