AF SDK Reference

AFDataReference.PlotValues Method

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AFDataReference.PlotValues Method

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Last UpdatedNov 18, 2025
4 minute read

Returns a single AFValue whose value is interpolated at the passed time.

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

Syntax

public virtual AFValues PlotValues(
	AFTimeRange timeRange,
	int intervals,
	AFAttributeList inputAttributes,
	AFValues[] inputValues,
	List<AFTime> inputTimes
)

Public Overridable Function PlotValues ( 
	timeRange As AFTimeRange,
	intervals As Integer,
	inputAttributes As AFAttributeList,
	inputValues As AFValues(),
	inputTimes As List(Of AFTime)
) As AFValues

Dim instance As AFDataReference
Dim timeRange As AFTimeRange
Dim intervals As Integer
Dim inputAttributes As AFAttributeList
Dim inputValues As AFValues()
Dim inputTimes As List(Of AFTime)
Dim returnValue As AFValues

returnValue = instance.PlotValues(timeRange, 
	intervals, inputAttributes, inputValues, 
	inputTimes)

public:
virtual AFValues^ PlotValues(
	AFTimeRange timeRange, 
	int intervals, 
	AFAttributeList^ inputAttributes, 
	array<AFValues^>^ inputValues, 
	List<AFTime>^ inputTimes
)

abstract PlotValues : 
        timeRange : AFTimeRange * 
        intervals : int * 
        inputAttributes : AFAttributeList * 
        inputValues : AFValues[] * 
        inputTimes : List<AFTime> -> AFValues 
override PlotValues : 
        timeRange : AFTimeRange * 
        intervals : int * 
        inputAttributes : AFAttributeList * 
        inputValues : AFValues[] * 
        inputTimes : List<AFTime> -> AFValues

Parameters

timeRange: Type: OSIsoft.AF.TimeAFTimeRange
The bounding time range for the plot values request.
intervals: Type: SystemInt32
The number of intervals to plot over. Typically, this would be the number of horizontal pixels in the trend.
inputAttributes: Type: OSIsoft.AF.AssetAFAttributeList
The input attributes as previously specified by the data reference in the GetInputs(Object) call. The index of the values will match the index of the corresponding attribute previously returned. These values must be converted to the appropriate UOM required by this data reference.
inputValues: Type: OSIsoft.AF.AssetAFValues
The input values are supplied to the data reference based on the attributes returned in the GetInputs(Object) call. The index of the values will match the index of the corresponding attribute previously returned. These values must be converted to the appropriate UOM required by this data reference.
inputTimes: Type: System.Collections.GenericListAFTime
The list of AFTime timestamps at which each input attribute was evaluated.

Return Value

Type: AFValues
Returns the AFValue for the attribute. If AFValue.IsGood returned by the data reference is , then the returned value is converted to the proper UOM and Type. The timestamp of the value will be at the requested time.

Exceptions

Exception	Condition
NotSupportedException	The data reference does not support this method.

Remarks

To retrieve recorded values for multiple attributes, use the AFListData.InterpolatedValue to achieve better performance.

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

Security Note
You must have ReadData security rights to read a data value.

AF SDK Reference