This function is mainly for internal use. It adds a label to
a logical vector, so that the Percent pseudo-function
can ignore it when forming a denominator.
Usage
labelSubset(subset, label)
Arguments
subset
A logical vector describing a subset of the dataset.
label
A character label to use to describe this subset in a call
to Equal or Unequal within Percent.
Value
A vector of class "labelledSubset" with the label
recorded as an attribute.