Signature Description Parameters
#include <DataFrame/DataFrameStatsVisitors.h>

template<typename T, typename I = unsigned long>
struct SampleZScoreVisitor;

// -------------------------------------

template<typename T, typename I = unsigned long>
using szs_v = SampleZScoreVisitor<T, I>;
        
This is a “single action visitor”, meaning it is passed the whole data vector in one call and you must use the single_act_visit() interface.

This functor class calculates the z-score of a sample against its population. It requires two columns. The first column is taken as population and the seconds column as sample. Its result a single value.
T: Column data type.
I: Index type.