HistorianValueSelector Enumeration
- Last UpdatedAug 21, 2026
- 2 minute read
Represents a value selection rule, which field from analog summary points should be used to convert the analog summary records to simple VTQs.
'Declaration
Public Enum HistorianValueSelector
Inherits System.Enum'Usage
Dim instance As HistorianValueSelectorpublic enum HistorianValueSelector : System.Enum public enum class HistorianValueSelector : public System.Enum | Member | Description |
|---|---|
| Auto | The retrieval mode determines the value. A value of Auto means that the retrieval mode should select the appropriate point to use. This is the default value. |
| Average | Returns a time-weighted average calculated from values within the summary period. The timestamp returned is the summary period start time. |
| First | Returns the first value that occurs within the summary period. The timestamp returned is the actual timestamp of the first value occurrance within the summary period. |
| Integral | Returns an integral value calculated from values within the summary period. The timestamp returned is the summary period start time. |
| Last | Returns the last value that occurs within the summary period. The timestamp returned is the actual timestamp of the last value occurrance within the summary period. |
| Maximum | Returns the first maximum value that occurs within the summary period. The timestamp returned is the actual timestamp of the first maximum value occurrance within the summary period. |
| Minimum | Returns the first minimum value that occurs within the summary period. The timestamp returned is the actual timestamp of the first minimum value occurrance within the summary period. |
| StdDev | Returns a standard deviation calculated from values within the summary period. The timestamp returned is the summary period start time. |
System.Object
System.ValueType
System.Enum
ArchestrA.HistorianValueSelector