pull_composite_variables()
takes a target and finds all the composite
variables (e.g. if a reduced variable is a target, it finds all the variables
the reduced variable is created from). expand_mappings()
extracts the
composite variables of a given variable. get_names()
finds the variable
names for a list of column positions.
pull_composite_variables(.partition_step)expand_mappings(x, .mapping_key)
get_names(.partition_step, target_list)
a partition_step
object
a mapping key
a list of composite variables
a vector containing mappings