tramME_model: Create an object that defines a tramME_model

Description

There are two ways of defining tramME models:

A ctm model and a formula defining the random effects and smooth terms.
A formula combining the notation of tram, lme4 and mgcv, a tram function name, and a dataset to set up the bases.

tramME_model(
  formula = NULL,
  data = NULL,
  tram = NULL,
  ctm = NULL,
  smooth = NULL,
  negative = NULL,
  ...
)

A tramME_model object that defines the mixed effects transfromation model.

formula: formula that either describes the whole model or the random effects specification. If the model contains random effects or smooth terms formula has to contain their definition in lme4-style and mgcv-style notation, respectively.
data: an optional data frame, list or environment (or object coercible by as.data.frame to a data frame) containing the variables in the model. If not found in data, the variables are taken from environment(formula).
tram: tram model name: Lm, BoxCox, Colr, Polr, Coxph, Survreg, Lehmann, Aareg, or the suffixed versions of these (e.g. ColrME). Ignored when a ctm model is also supplied.
ctm: A ctm model
smooth: Optional pre-defined smooth specification of the class tramME_smooth. If present, the smooth terms in the formula are ignored.
negative: an optional parameter that defines whether the random effects have a positive or a negative sign in the model when the fixed effecst part is defined through a ctm
...: optional arguments passed to tram when the model is defined by the formula