If there are no positive observations for a contrast, it is generally not estimible. However, for the purposes of testing we can replace it with the least favorable value with respect to the contrasts that are defined.

impute(object, groupby)

Arguments

object
Output of predict
groupby
Variables (column names in predict) to group by for imputation (facets of the plot)

Value

data.table

Examples

##See stat_ell example(stat_ell)
#> Warning: no help found for ‘stat_ell’