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AF SDK Reference

AFAggregate.FrequencyDistribution(T) Method

  • Last UpdatedNov 18, 2025
  • 2 minute read
AFAggregate.FrequencyDistribution(T) Method
Generates a frequency distribution for the specified items.

Namespace:  OSIsoft.AF.Data.Aggregate
Assembly:  OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182

Syntax

public static AFGroupedResult<Object> FrequencyDistribution<T>(
	this IEnumerable<T> items,
	string groupedField
)
where T : AFObject
<ExtensionAttribute>
Public Shared Function FrequencyDistribution(Of T As AFObject) ( 
	items As IEnumerable(Of T),
	groupedField As String
) As AFGroupedResult(Of Object)

Dim items As IEnumerable(Of T)
Dim groupedField As String
Dim returnValue As AFGroupedResult(Of Object)

returnValue = items.FrequencyDistribution(groupedField)
public:
[ExtensionAttribute]
generic<typename T>
where T : AFObject
static AFGroupedResult<Object^>^ FrequencyDistribution(
	IEnumerable<T>^ items, 
	String^ groupedField
)
[<ExtensionAttribute>]
static member FrequencyDistribution : 
        items : IEnumerable<'T> * 
        groupedField : string -> AFGroupedResult<Object>  when 'T : AFObject

Parameters

items
Type: System.Collections.GenericIEnumerableT
The items that should be summarized.
groupedField
Type: SystemString
The field whose value should be grouped.

Type Parameters

T
The type of items to summarize

Return Value

Type: AFGroupedResultObject
A result containing the requested frequency distribution or an error if the summaries could not be performed.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Version Information

AFSDK

Supported in: 3.1.1, 3.1.0, 3.0.2, 3.0.1, 3.0.0, 2.10.11, 2.10.5, 2.10.0, 2.10, 2.9.5, 2.9

See Also

In This Topic
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