PlotValueUtil does the calculation for the plot-specific variable in the ColumnInfo class. It follows the same pattern as SummaryStatsUtil, taking a Pandas.Series and a ColumnInfo as input, fill all the attributes via several built-in functions.
PlotValueUtil (col_series, col_info)
Return a blank PlotValueUtil object, does the plot variable calculation and fill corresponding variables in the given ColumnInfo object.
ecdf (data)
Compute ECDF for a one-dimensional array of measurement, where data is the list of x-axis, and return corresponding list of y-axis.
cal_plot_values (data)
Compute all the variables related to plot operation, nothing will be returned.