lme4: checkConv – R documentation

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lme4

checkConv

Extended Convergence Checking

Description

Primarily internal code for checking optimization convergence, see convergence for a more detailed discussion.

Usage

checkConv(derivs, coefs, ctrl, lbound, debug = FALSE)

Arguments

`derivs`	typically the "derivs" attribute of `optimizeLmer()`; with "gradients" and possibly "Hessian" component
`coefs`	current coefficient estimates
`ctrl`	list of lists, each with `action` character strings specifying what should happen when a check triggers, and `tol` numerical tolerances, as is the result of `lmerControl()$checkConv`.
`lbound`	vector of lower bounds for random-effects parameters only (length is taken to determine number of RE parameters)
`debug`	enable debugging output, useful if some checks are on "ignore", but would "trigger"

Value

A result list containing

`code`	The return code for the check
`messages`	A character vector of warnings and messages generated by the check

Douglas Bates [aut] (<https://orcid.org/0000-0001-8316-9503>), Martin Maechler [aut] (<https://orcid.org/0000-0002-8685-9910>), Ben Bolker [aut, cre] (<https://orcid.org/0000-0002-2127-0443>), Steven Walker [aut] (<https://orcid.org/0000-0002-4394-9078>), Rune Haubo Bojesen Christensen [ctb] (<https://orcid.org/0000-0002-4494-3399>), Henrik Singmann [ctb] (<https://orcid.org/0000-0002-4842-3657>), Bin Dai [ctb], Fabian Scheipl [ctb] (<https://orcid.org/0000-0001-8172-3603>), Gabor Grothendieck [ctb], Peter Green [ctb] (<https://orcid.org/0000-0002-0238-9852>), John Fox [ctb], Alexander Bauer [ctb], Pavel N. Krivitsky [ctb, cph] (<https://orcid.org/0000-0002-9101-3362>, shared copyright on simulate.formula)

Initial release