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    • Accumulator(T, U) Class
    • Aggregator(T, U) Class
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    • DataFrame Class
    • DataFrame(R, C) Class
    • DataFrameRow(R, C) Class
    • DateTimeExtensions Class
    • DateTimeUnit Enumeration
    • Direction Enumeration
    • Grouping Class
    • Grouping(TKey) Class
    • Histogram Class
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    • IAccumulator(T, U) Interface
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    • IAggregator Interface
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    • IGrouping Interface
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  • Grouping Class
    • Methods
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    • VariableWindow(T) Method
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  • VariableWindow(T) Method

GroupingVariableWindowT Method

Extreme Optimization Numerical Libraries for .NET Professional
Returns a grouping that represents a moving window based on the specified condition.

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

C#
VB
C++
F#
Copy
public static Grouping<T> VariableWindow<T>(
	IList<T> index,
	Func<T, T, bool> condition,
	bool incremental,
	Direction direction
)
Public Shared Function VariableWindow(Of T) ( 
	index As IList(Of T),
	condition As Func(Of T, T, Boolean),
	incremental As Boolean,
	direction As Direction
) As Grouping(Of T)
public:
generic<typename T>
static Grouping<T>^ VariableWindow(
	IList<T>^ index, 
	Func<T, T, bool>^ condition, 
	bool incremental, 
	Direction direction
)
static member VariableWindow : 
        index : IList<'T> * 
        condition : Func<'T, 'T, bool> * 
        incremental : bool * 
        direction : Direction -> Grouping<'T> 

Parameters

index
Type: System.Collections.GenericIListT
The index the grouping is over.
condition
Type: SystemFuncT, T, Boolean
A delegate that indicates whether two keys are in the same window.
incremental
Type: SystemBoolean
Indicates that the right edge of the window is not decreasing.
direction
Type: Extreme.DataAnalysisDirection
Specifies whether the condition should be verified moving forward or backward through the values.

Type Parameters

T
The element type of the index.

Return Value

Type: GroupingT
Exceptions

ExceptionCondition
ArgumentNullException

index is

-or-

condition is

Remarks

The extent of each window is determined by the first key value and condition. The window is extended as long as condition returns whe applied to the first key and the subsequent keys.

See Also

Reference

Grouping Class
Extreme.DataAnalysis Namespace

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