gremlinControl {gremlin}

Advanced Options for Mixed-effect modeling functions.

Description

Change default settings for gremlin models.

Usage

gremlinControl(
  cctol = c(5e-04, 1e-08, 0.001, NULL),
  ezero = 1e-08,
  einf = 1e+30,
  step = 0.3,
  lambda = TRUE,
  algorithm = NULL,
  algArgs = list()
)

Arguments

cctol

Convergence criteria tolerances (Meyer 2007, 2019).

ezero

Effective zero to be used, values less than this number are treated as zero and fixed to this value.

einf

Effective infinite value to be used, values are limited to a to this variable as a maximum.

step

A numeric value for scaling the proposed parameter updates.

lambda

A logical indicating whether a residual variance should be factored out of the mixed model equations.

algorithm

A character naming the function to use to decide subsequent parameters in the REML iterations.

algArgs

A list of function arguments to be given to functions named in the algorithm argument.

Value

A list of class gremlinControl to be used by gremlinSetup and later functions when fitting the model.

Author(s)

[e-mail]

References

Meyer, K. 2007. WOMBAT - a tool for mixed model analyses in quantitative genetics by restricted maximum likelihood (REML). Journal of Zhejiang University SCIENCE B 8(11):815-821.

Meyer, K. 2019. WOMBAT A program for mixed model analyses by restricted maximum likelihood. User Notes. 27 September 2019.

Examples

  str(gremlinControl())