Product Features
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Analytics
Statistical Functions
Gaussian Filter
3min
The Gaussian Filter processor is a simple Gaussian digital filter.
- First, the mean, standard deviation and variance of a window of values is calculated.
- Coefficient is calculated by the formula 1/ {squareRoot(2 * PI) * deviations}
- Exponential Part is calculated by the formula exp{ -(1/2) * (current - mean)^2 / (dev)^2 }
- Multiplying those values gives the Gaussian Function, and then filtered value is obtained.
- The timer interval parameter is useful if the connected input tag is currently not polling, but you still want this KPI to publish a value every few seconds, defined by the aforementioned timer.
- If you know your input is going to publish at the expected interval, it is better to disable this timer by entering 0 in the field.
Parameters | Details |
---|---|
Window Size | This parameter specifies the window in which the Gaussian filter calculates its values. The window size represents the number of seconds over which the Gaussian filter operates. |
Timer Interval | Timer in milliseconds. If no event, use this timer to keep displaying the output continually. Enter zero to disable. |
Pass Through Value | The Pass Through Value parameter enables you to specify how anomalous data should be handled. |
Gaussian Filter parameters
Note: When creating an analytics flow with Gaussian Filter processor, refer the Use the Gaussian Filter Function guide for more details.