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AF SDK Reference

PIPoint.InterpolatedValuesByCount Method

  • Last UpdatedNov 18, 2025
  • 3 minute read
PIPoint.InterpolatedValuesByCount Method
This method returns the specified number of interpolated values evenly spaced throughout the specified timeRange.

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

Syntax

public AFValues InterpolatedValuesByCount(
	AFTimeRange timeRange,
	int numberOfValues,
	string filterExpression,
	bool includeFilteredValues
)
Public Function InterpolatedValuesByCount ( 
	timeRange As AFTimeRange,
	numberOfValues As Integer,
	filterExpression As String,
	includeFilteredValues As Boolean
) As AFValues

Dim instance As PIPoint
Dim timeRange As AFTimeRange
Dim numberOfValues As Integer
Dim filterExpression As String
Dim includeFilteredValues As Boolean
Dim returnValue As AFValues

returnValue = instance.InterpolatedValuesByCount(timeRange, 
	numberOfValues, filterExpression, 
	includeFilteredValues)
public:
AFValues^ InterpolatedValuesByCount(
	AFTimeRange timeRange, 
	int numberOfValues, 
	String^ filterExpression, 
	bool includeFilteredValues
)
member InterpolatedValuesByCount : 
        timeRange : AFTimeRange * 
        numberOfValues : int * 
        filterExpression : string * 
        includeFilteredValues : bool -> AFValues 

Parameters

timeRange
Type: OSIsoft.AF.TimeAFTimeRange
The start and end time covered by the request.
numberOfValues
Type: SystemInt32
The number of interpolated values to return even spaced throughout the timeRange.
filterExpression
Type: SystemString
A filter expression that follows the performance equation syntax.
includeFilteredValues
Type: SystemBoolean
Specify to indicate that values which fail the filter criteria are present in the returned data at the times where they occurred with a value set to a "Filtered" enumeration value with bad status. Repeated consecutive failures are omitted.

Return Value

Type: AFValues
Returns an AFValues collection with the interpolated values.

Exceptions

ExceptionCondition
PIExceptionError returned by the PI Data Archive.
ArgumentException The numberOfValues is less than or equal to zero.

Remarks

Note Notes to Callers
This method, property, or class is not available in the legacy .NET 3.5 version of the SDK.

Version Information

AFSDK


See Also

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