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reformulas (random
effects formulas) is a utility package for processing
“lme4-style” random effects formulas in R (i.e., formulas
where the random effects are included in the form (f|g) as
components of an overall model formula, where f represents
a sub-formula for the varying effects and g represents a
sub-formula for the grouping variable(s).
The package contains functions like findbars (extract
terms containing |, i.e. random-effects terms),
nobars (drop terms containing bars from a formula), etc..
The goal of reformulas is to be used upstream of
lme4 and glmmTMB (and possibly other packages)
as a unified toolkit for processing formulas.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.