The main function of the package is to perform backward selection of fixed effects, forward fitting of the random effects, and post-hoc analyses using parallel capabilities. Other functionality includes the computation of ANOVAs with upper- or lower-bound p-values and R-squared values for each model term, model criticism plots, data trimming on model residuals, and data visualization. The data to run examples is contained in package LCF_data.
● Data Source:
CranContrib
● Keywords: package
● Alias: LMERConvenienceFunctions, LMERConvenienceFunctions-package
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The densities of two continuous variables is first computed using the density function from package stats. The outer product of the two densities is computed, which can be plotted as a contour map, a perspective plot, or a dynamic 3d perspective graph.
● Data Source:
CranContrib
● Keywords: dynamic, hplot, multivariate
● Alias: plotDensity3d.fnc
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Forward-fit an LMER model's random effect structure by comparing a model without one of the specified random effects and a model with it by way of log-likelihood ratio testing. If the more complex model is a significantly better fit, the random effect is kept, otherwise it is dropped. This function can now be used with generalized linear mixed-effects models (glmers).
● Data Source:
CranContrib
● Keywords: models & regression
● Alias: ffRanefLMER.fnc
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Compute upper- and lower-bound p-values for the analysis of variance (or deviance) as well as the amount of deviance explained (%) for each fixed-effect of an LMER model. Note that, at the moment, this function cannot be used with generalized linear mixed-effects models (glmers).
● Data Source:
CranContrib
● Keywords: models & regression
● Alias: pamer.fnc
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Plot partial effects of a (generalized) linear mixed-effects model fit with lmer (compatible with package lme4 version > 1.0).
● Data Source:
CranContrib
● Keywords: regression
● Alias: plotLMER.fnc
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cn
(Package: LMERConvenienceFunctions) :
List the column names of a data frame in matrix format.
The colum names of the specified data frame are listed in matrix format, that is, each one appears in one row preceded by the row number.
● Data Source:
CranContrib
● Keywords:
● Alias: cn
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For a specified response variable and interacting continuous predictors, visualize in 3d the surface average.
● Data Source:
CranContrib
● Keywords: hplot
● Alias: plotRaw3d.fnc
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bfFixefLMER_t.fnc
(Package: LMERConvenienceFunctions) :
Back-fits an LMER model on absolute t-value and, optionally, on LLRT.
This function back-fits an initial LMER model on t-values, and, if enabled, log-likelihood ratio testing. Note that, this function CAN be used with generalized linear mixed-effects models (glmers).
● Data Source:
CranContrib
● Keywords: models & regression
● Alias: bfFixefLMER_t.fnc
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cdf
(Package: LMERConvenienceFunctions) :
Change directory; list files and directories in new directory using function code{f
Change directory to the one corresponding to the row number returned by function f.
● Data Source:
CranContrib
● Keywords:
● Alias: cdf
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Calculate the relative log-likehood between two models.
● Data Source:
CranContrib
● Keywords:
● Alias: relLik
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providing 
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