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    • Accumulator 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
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    • Grouping Class
    • Grouping(TKey) Class
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    • 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
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  • DataFrame(R, C) Class
    • DataFrame(R, C) Constructor
    • Properties
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    • AddColumn Method Overloads
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    • GetRows Method Overloads
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  • AggregateBy Method Overloads
    • AggregateBy(R1) Method (IList(R1), AggregatorGroup[])
    • AggregateBy(R1, T) Method (IList(R1), AggregatorGroup(T))
    • AggregateBy(R1) Method (IList(R1), Tuple(C, AggregatorGroup)[])
    • AggregateBy(R1) Method (C, AggregatorGroup[])
    • AggregateBy(R1, T) Method (C, AggregatorGroup(T))
    • AggregateBy(R1, T, U) Method (C, Func(Vector(T), U))
    • AggregateBy(R1) Method (C, Tuple(C, AggregatorGroup)[])
    • AggregateBy(R1) Method (Grouping(R1), AggregatorGroup[])
    • AggregateBy(R1, T) Method (Grouping(R1), AggregatorGroup(T))
    • AggregateBy(R1) Method (Grouping(R1), IDictionary(C, AggregatorGroup))
    • AggregateBy(R1) Method (Grouping(R1), Tuple(C, AggregatorGroup)[])
    • AggregateBy(R1) Method (IGrouping, AggregatorGroup[])
    • AggregateBy(R1, T) Method (IGrouping, AggregatorGroup(T))
    • AggregateBy(R1) Method (IGrouping, Tuple(C, AggregatorGroup)[])
    • AggregateBy(R1, C1) Method (Grouping(R1), IEnumerable(Tuple(C, AggregatorGroup)), Index(C1))
  • AggregateBy(R1, T, U) Method (C, Func(Vector(T), U))
DataFrameR, CAggregateByR1, T, U Method (C, FuncVectorT, U)Extreme Optimization Numerical Libraries for .NET Professional
Applies the specified aggregation function to the values in each column grouped by the specified grouping column.

Namespace: Extreme.DataAnalysis
Assembly: Extreme.Numerics.Net40 (in Extreme.Numerics.Net40.dll) Version: 6.0.16073.0 (6.0.16312.0)
Syntax

C#
VB
C++
F#
Copy
public DataFrame<R1, C> AggregateBy<R1, T, U>(
	C groupingColumn,
	Func<Vector<T>, U> aggregator
)
Public Function AggregateBy(Of R1, T, U) ( 
	groupingColumn As C,
	aggregator As Func(Of Vector(Of T), U)
) As DataFrame(Of R1, C)
public:
generic<typename R1, typename T, typename U>
DataFrame<R1, C>^ AggregateBy(
	C groupingColumn, 
	Func<Vector<T>^, U>^ aggregator
)
member AggregateBy : 
        groupingColumn : 'C * 
        aggregator : Func<Vector<'T>, 'U> -> DataFrame<'R1, 'C> 

Parameters

groupingColumn
Type: C
The key of the grouping column.
aggregator
Type: SystemFuncVectorT, U
A function that transforms a vector of type T to a value of type U.

Type Parameters

R1
The element type of the grouping column.
T
The element type of the columns to group.
U
The type of the result of the aggregation.

Return Value

Type: DataFrameR1, C
A new data frame with rows indexed by the unique elements of column groupingColumn and values the result of aggregator applied to each grouping.
Exceptions

ExceptionCondition
ArgumentNullException

aggregator is .

Version Information

Numerical Libraries

Supported in: 6.0
See Also

Reference

DataFrameR, C Class
AggregateBy Overload
Extreme.DataAnalysis Namespace

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