public AFValues InterpolatedValues( AFTimeRange timeRange, AFTimeSpan interval, string filterExpression, bool includeFilteredValues )
Public Function InterpolatedValues ( timeRange As AFTimeRange, interval As AFTimeSpan, filterExpression As String, includeFilteredValues As Boolean ) As AFValues Dim instance As PIPoint Dim timeRange As AFTimeRange Dim interval As AFTimeSpan Dim filterExpression As String Dim includeFilteredValues As Boolean Dim returnValue As AFValues returnValue = instance.InterpolatedValues(timeRange, interval, filterExpression, includeFilteredValues)
public: AFValues^ InterpolatedValues( AFTimeRange timeRange, AFTimeSpan interval, String^ filterExpression, bool includeFilteredValues )
member InterpolatedValues : timeRange : AFTimeRange * interval : AFTimeSpan * filterExpression : string * includeFilteredValues : bool -> AFValues
The Sample interval. If specified in hours, minutes, seconds, or milliseconds, the time intervals will be evenly spaced UTC time intervals. Longer interval types are interpreted using wall clock rules and are time zone dependent. For example, an interval created with the string "24h" means using an evenly spaced 24 UTC hour interval between each event. On the other hand, an interval created with the string "1d" would return an interval shorter or longer than 24 hours if the interval encompasses a Daylight Savings Time change.
When a positive interval is specified, the interval calculation begins at the earliest bounding time in the timeRange and applies the interval repeatedly in time ascending direction to generate the calculation intervals.
If a negative interval is specified, the interval calculation begins at the latest bounding time in the timeRange and applies the interval repeatedly in time descending direction to generate the calculation intervals. Note that the order of values returned will still be reflected by the timeRange, regardless of the interval sign.
|PIException||Error returned by the PI Data Archive.|
|Time Range||Interval||Timestamps returned in AFValues|
|Ascending (Y to T)||Positive (5h)||Y, Y+5h, Y+10h, Y+15h, Y+20h|
|Descending (T to Y)||Positive (5h)||Y+20h, Y+15h, Y+10h, Y+5h, Y|
|Ascending (Y to T)||Negative (-5h)||T-20h, T-15h, T-10h, T-5h, T|
|Descending (T to Y)||Negative (-5h)||T, T-5h, T-10h, T-15h, T-20h|
|Notes to Callers|
|This method, property, or class is only available in the .NET 4 version of the SDK.|