Statistic summaries

Objective

Provide a statistics summary of the provided event attribute

Example

time window:
  emitting type: slidingStatisticSummaries
  window functions:
    stats summary:
        function:
           statistics summary: {}
        attributes: [ ask,bid ]
  policy:
    type: slidingTime
    slide: 500
    window size: 2500

Output attributes

After processing, attributes receive automatically applied postfix ID = STATS

Before processing	After processing	Type
ask	ask_STATS	double values
bid	bid_STATS	double values

Generated statistics

Type	Description
SUM	Sum of field values
MIN	Min of field value
MAX	Max of field value
MEAN	Mean of field value
VARIANCE	Variance of field value
STDEV	Standard deviation of field value
FIRST	First field value in window
LAST	Last field value in window
HARMONIC_MEAN	Harmonic mean of field value
GEOMETRIC_MEAN	Geometric mean of field value
PVARIANCE	Population variance of field value
SECOND_MOMENT	Seond moment of field value
SUM_SQRTS	Sum of square root of field value
SUM_LOGS	Sum of log of field value