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Packages
MovingOutlier
Performs moving band outlier calculation.
The function computes a band in a time window, based on the percentiles within this time window and if a certain point is beyond this band (including a user defined tolerance) the value is identified as an outlier. The function returns 1 if outlier is detected
Syntax
MovingOutlier(expression, # of data points before, # of data points after, low percentile value,high percentile value, tolerance value)
- expression: signal expression
- # of data points before - integer number of points in the signal expression before the current date in the aggregation range
- # of data points after - integer number of points in the signal expression after the current date in the aggregation range
- low percentile value
- high percentile value
- tolerance value
Example
MovingOutlier("produced oil per time increment" in "STB", 3, 3, 20, 80, 1)
As you see in the following table the MovingBandOutlier with 3 data points back and 3 data points forward in time produces following output based on the 'original signal' as input: