NewAbsentOp creates a new absent operation.

NewAggregationOp creates a new aggregation operation.

NewCountValuesOp creates a new count values operation.

NewTakeOp creates a new takeK operation.

AbsentType returns 1 if there are no elements in this step, or if no series are present in the current block.

AverageType averages all non nan elements in a list of series.

BottomKType gathers the smallest k non nan elements in a list of series.

CountType counts all non nan elements in a list of series.

CountValuesType counts the number of non nan elements with the same value.

MaxType takes the maximum all non nan elements in a list of series.

MinType takes the minimum all non nan elements in a list of series.

QuantileType takes the n-th non nan quantile element in a list of series Special cases are: n < 0 = -Inf n > 1 = +Inf.

StandardDeviationType takes the population standard deviation of all non nan elements in a list of series.

StandardVarianceType takes the population standard variance of all non nan elements in a list of series.

SumType adds all non nan elements in a list of series.

TopKType gathers the largest k non nan elements in a list of series.

NodeParams contains additional parameters required for aggregation ops.