Access the posterior distribution of the linear predictor for zero-inflation parameter

Extract the posterior draws of the linear predictor for the zero-inflation parameter, possibly transformed by the inverse-link function.

Usage

posterior_zipred(
  object,
  transform = FALSE,
  newdata = NULL,
  ndraws = NULL,
  draw_ids = NULL,
  list_index = "draws"
)

Arguments

object

The model object

transform

Should the linear predictor be transformed using the inverse-link function. The default is FALSE, in which case the untransformed linear predictor is returned.

newdata

New data, by default NULL and uses original data

ndraws

Number of draws, by default the number of samples in the posterior. Will be sampled randomly from the chains if fewer than the number of samples.

draw_ids

The IDs of the draws to be used, as a numeric vector

list_index

Whether to return the output list indexed by the number of draws (default), species, or site.

Value

A list of linear predictors. If list_index is "draws" (the default) the list will have length equal to the number of draws with each element of the list being a site x species matrix. If the list_index is "species" the list will have length equal to the number of species with each element of the list being a draws x sites matrix. If the list_index is "sites" the list will have length equal to the number of sites with each element of the list being a draws x species matrix. Note that in the zero-inflated case this is only the linear predictor of the non-zero-inflated part of the model.

See also

posterior_predict.jsdmStanFit()