Extract draws from the result of a call to emmeans::emmeans() (formerly lsmeans)
or emmeans::ref_grid() applied to a Bayesian model.
gather_emmeans_draws(object, value = ".value", ...)# S3 method for default
gather_emmeans_draws(object, value = ".value", ...)
# S3 method for emm_list
gather_emmeans_draws(object, value = ".value", grid = ".grid", ...)
A tidy data frame of draws. The columns of the reference grid are returned as-is, with an
additional column called .value (by default) containing marginal draws. The resulting data
frame is grouped by the columns from the reference grid to make use of summary functions like
point_interval() straightforward.
If object is an emmeans::emm_list(), which contains estimates from different reference grids,
an additional column with the default name of ".grid" is added to indicate the reference grid for each row in the output.
The name of this column is controlled by the grid argument.
An emmGrid object such as returned by
emmeans::ref_grid() or emmeans::emmeans().
The name of the output column to use to contain the values of draws. Defaults to ".value".
Additional arguments passed to the underlying method for the type of object given.
If object is an emmeans::emm_list(), the name of the output column to use to contain the name of the
reference grid that a given row corresponds to. Defaults to ".grid".
Matthew Kay
emmeans::emmeans() provides a convenient syntax for generating draws from "estimated marginal means" from a model,
and can be applied to various Bayesian models, like rstanarm::stanreg-objects and
MCMCglmm::MCMCglmm(). Given a emmeans::ref_grid() object as returned by functions like
emmeans::ref_grid() or emmeans::emmeans() applied to a Bayesian model,
gather_emmeans_draws returns a tidy format data frame of draws from
the marginal posterior distributions generated by emmeans::emmeans().
emmeans::emmeans()