split_relativities() is deprecated. Use split_level() to define a named
parent-level split and combine multiple splits with relativities().
Usage
split_relativities(new_levels, relativities)
Value
A data frame with columns new_level and relativity. New code
should use split_level(), which also records the parent model level
required by add_relativities().
Arguments
new_levels
Character vector. Names of the new sublevels.
relativities
Numeric vector. Relativities corresponding to each
sublevel. Must have the same length as new_levels.