• Extreme Optimization
  • Features
  • Solutions
  • Documentation
  • QuickStart Samples
  • Sample Applications
  • Downloads
  • Technical Support
  • Download trial
  • How to buy
  • Blog
  • Company
  • Resources
• Documentation
  • Introduction
  • Deployment Guide
  • Nuget packages
  • Configuration
  • Using Parallelism
  • Mathematics Library User's Guide
  • Vector and Matrix Library User's Guide
  • Data Analysis Library User's Guide
  • Statistics Library User's Guide
  • Data Access Library User's Guide
  • Reference
• Reference
  • Extreme
  • Extreme.Collections
  • Extreme.Data
  • Extreme.Data.Json
  • Extreme.Data.Matlab
  • Extreme.Data.R
  • Extreme.Data.Stata
  • Extreme.Data.Text
  • Extreme.DataAnalysis
  • Extreme.DataAnalysis.Linq
  • Extreme.DataAnalysis.Models
  • Extreme.Mathematics
  • Extreme.Mathematics.Algorithms
  • Extreme.Mathematics.Calculus
  • Extreme.Mathematics.Calculus.OrdinaryDifferentialEquations
  • Extreme.Mathematics.Curves
  • Extreme.Mathematics.Curves.Nonlinear
  • Extreme.Mathematics.Distributed
  • Extreme.Mathematics.EquationSolvers
  • Extreme.Mathematics.Generic
  • Extreme.Mathematics.LinearAlgebra
  • Extreme.Mathematics.LinearAlgebra.Implementation
  • Extreme.Mathematics.LinearAlgebra.IterativeSolvers
  • Extreme.Mathematics.LinearAlgebra.IterativeSolvers.Preconditioners
  • Extreme.Mathematics.Optimization
  • Extreme.Mathematics.Optimization.LineSearches
  • Extreme.Mathematics.Random
  • Extreme.Mathematics.SignalProcessing
  • Extreme.Providers
  • Extreme.Providers.InteropServices
  • Extreme.Statistics
  • Extreme.Statistics.Distributions
  • Extreme.Statistics.Multivariate
  • Extreme.Statistics.Tests
  • Extreme.Statistics.TimeSeriesAnalysis
• Extreme.DataAnalysis
  • Accumulator(T, U) Class
  • Aggregator(T, U) Class
  • Aggregator2(T, U) Class
  • Aggregator2Group Class
  • Aggregator2Group(T) Class
  • AggregatorGroup Class
  • AggregatorGroup(T) Class
  • Aggregators Class
  • BoundaryIntervalBehavior Enumeration
  • CategoricalEncoding Class
  • DataFrame Class
  • DataFrame(R, C) Class
  • DataFrameRow(R, C) Class
  • DateTimeExtensions Class
  • DateTimeUnit Enumeration
  • Direction Enumeration
  • Grouping Class
  • Grouping(TKey) Class
  • Histogram Class
  • Histogram(T) Class
  • IAccumulator(T, U) Interface
  • IAccumulator2(T, U) Interface
  • IAccumulator2(T, U, V) Interface
  • IAggregator Interface
  • IAggregator(T) Interface
  • IAggregator2 Interface
  • IAggregator2(T) Interface
  • IDataFrame Interface
  • IGrouping Interface
  • IIndex Interface
  • Index Class
  • Index(T) Class
  • IntervalIndex(T) Class
  • IPivot Interface
  • JoinIndex Class
  • JoinType Enumeration
  • MissingValueAction Enumeration
  • MissingValueException Class
  • MultipleMissingValueAction Enumeration
  • Parameter(T) Class
  • ParameterVector(T) Class
  • Pivot Class
  • Pivot(R, C) Class
  • RankTiebreaker Enumeration
  • Recurrence Class
  • SortOrder Enumeration
  • SpecialBins Enumeration
  • Subset Class
  • TransformedParameter(T) Class
  • TypePreservingAggregatorGroup Class
  • VectorExtensions Class
• IAggregator2 Interface
  • Properties
  • Methods

IAggregator2 Interface

Extreme Optimization Numerical Libraries for .NET Professional

Specifies the methods and properties shared by all aggregators.

Namespace:  Extreme.DataAnalysis
Assembly:  Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1

Syntax

---

C#

VB

C++

F#

Copy

public interface IAggregator2

Public Interface IAggregator2

public interface class IAggregator2

type IAggregator2 =  interface end

The IAggregator2 type exposes the following members.

Properties

---

	Name	Description
	EmptyGroupsHaveValue	Gets whether the aggregator produces a value for empty groups.

Top

Methods

---

	Name	Description
	AggregateInto	Aggregates the elements of a data frame column according to the specified grouping and returns the result in an existing vector.

Top

See Also

---

Reference

Extreme.DataAnalysis Namespace

Copyright © 2004-2021, Extreme Optimization. All rights reserved.
Extreme Optimization, Complexity made simple, M#, and M Sharp are trademarks of ExoAnalytics Inc.
Microsoft, Visual C#, Visual Basic, Visual Studio, Visual Studio.NET, and the Optimized for Visual Studio logo
are registered trademarks of Microsoft Corporation.