templat<typename T, typename I = unsigned long, typename = typename std::enable_if<std::is_arithmetic<T>::value, T>::type>
struct ZScoreVisitor;
|
This is a “single action visitor”, meaning it is passed the whole data vector in one call and you must use the single_action_visit() interface.
This functor class calculates the z-score each value in a given column against the same column as the population. Its result is a vector of z-scores.
|
T: Column data type.
I: Index type.
|