Auxillary functions for computing lsmeans, contrasts etc.
get_xlevels(obj)# S3 method for default
get_xlevels(obj)
# S3 method for mer
get_xlevels(obj)
# S3 method for merMod
get_xlevels(obj)
get_contrasts(obj)
# S3 method for default
get_contrasts(obj)
# S3 method for merMod
get_contrasts(obj)
set_xlevels(xlev, at)
get_vartypes(obj)
set_covariate_val(xlev, covariateVal)
get_X(obj, newdata, at = NULL)
# S3 method for default
get_X(obj, newdata, at = NULL)
# S3 method for merMod
get_X(obj, newdata, at = NULL)
An R object
FIXME: to be described
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